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Finding the Fourth Proportional to 72,344,339.80, 108,642,480.90 and 38,332,115.80

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Solution

The fourth proportional to 72,344,339.80, 108,642,480.90 and 38,332,115.80 is: 57,564,920.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,344,339.80 : 108,642,480.90 = 38,332,115.80 : x
  2. Step 2: Convert to fraction form
    72,344,339.80/108,642,480.90 = 38,332,115.80/x
  3. Step 3: Cross multiply
    72,344,339.80x = 108,642,480.90 × 38,332,115.80
  4. Step 4: Simplify right side
    72,344,339.80x = 4,164,496,158,658,088
  5. Step 5: Solve for x
    x = 4,164,496,158,658,088/72,344,339.80
  6. Step 6: Final answer
    x = 57,564,920.35

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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.