Home / 30,487,307,419.05-42,073,619,682.33-18,281,999,680.23

Finding the Fourth Proportional to 30,487,307,419.05, 42,073,619,682.33 and 18,281,999,680.23

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Solution

The fourth proportional to 30,487,307,419.05, 42,073,619,682.33 and 18,281,999,680.23 is: 25,229,840,438.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,487,307,419.05 : 42,073,619,682.33 = 18,281,999,680.23 : x
  2. Step 2: Convert to fraction form
    30,487,307,419.05/42,073,619,682.33 = 18,281,999,680.23/x
  3. Step 3: Cross multiply
    30,487,307,419.05x = 42,073,619,682.33 × 18,281,999,680.23
  4. Step 4: Simplify right side
    30,487,307,419.05x = 769,189,901,578,475,667,456
  5. Step 5: Solve for x
    x = 769,189,901,578,475,667,456/30,487,307,419.05
  6. Step 6: Final answer
    x = 25,229,840,438.38

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Double scale
Find fourth proportional to 30,487,307,420.05, 42,073,619,683.71 and 18,281,999,681.23
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.