Home / 30,696,919.47-42,357,728.64-18,308,466.84

Finding the Fourth Proportional to 30,696,919.47, 42,357,728.64 and 18,308,466.84

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Solution

The fourth proportional to 30,696,919.47, 42,357,728.64 and 18,308,466.84 is: 25,263,286.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,696,919.47 : 42,357,728.64 = 18,308,466.84 : x
  2. Step 2: Convert to fraction form
    30,696,919.47/42,357,728.64 = 18,308,466.84/x
  3. Step 3: Cross multiply
    30,696,919.47x = 42,357,728.64 × 18,308,466.84
  4. Step 4: Simplify right side
    30,696,919.47x = 775,505,070,223,158.25
  5. Step 5: Solve for x
    x = 775,505,070,223,158.25/30,696,919.47
  6. Step 6: Final answer
    x = 25,263,286.47

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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.