Home / 30,487,307,417.30-42,073,619,679.92-18,281,999,678.47

Finding the Fourth Proportional to 30,487,307,417.30, 42,073,619,679.92 and 18,281,999,678.47

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Solution

The fourth proportional to 30,487,307,417.30, 42,073,619,679.92 and 18,281,999,678.47 is: 25,229,840,435.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,487,307,417.30 : 42,073,619,679.92 = 18,281,999,678.47 : x
  2. Step 2: Convert to fraction form
    30,487,307,417.30/42,073,619,679.92 = 18,281,999,678.47/x
  3. Step 3: Cross multiply
    30,487,307,417.30x = 42,073,619,679.92 × 18,281,999,678.47
  4. Step 4: Simplify right side
    30,487,307,417.30x = 769,189,901,460,064,698,368
  5. Step 5: Solve for x
    x = 769,189,901,460,064,698,368/30,487,307,417.30
  6. Step 6: Final answer
    x = 25,229,840,435.94

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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.