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Finding the Fourth Proportional to 72,447,952.30, 108,797,899.65 and 38,435,728.30

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Solution

The fourth proportional to 72,447,952.30, 108,797,899.65 and 38,435,728.30 is: 57,720,423.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,447,952.30 : 108,797,899.65 = 38,435,728.30 : x
  2. Step 2: Convert to fraction form
    72,447,952.30/108,797,899.65 = 38,435,728.30/x
  3. Step 3: Cross multiply
    72,447,952.30x = 108,797,899.65 × 38,435,728.30
  4. Step 4: Simplify right side
    72,447,952.30x = 4,181,726,510,558,065
  5. Step 5: Solve for x
    x = 4,181,726,510,558,065/72,447,952.30
  6. Step 6: Final answer
    x = 57,720,423.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.