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Finding the Fourth Proportional to 72,326,411.40, 108,489,617.10 and 43,604,977.80

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Solution

The fourth proportional to 72,326,411.40, 108,489,617.10 and 43,604,977.80 is: 65,407,466.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,326,411.40 : 108,489,617.10 = 43,604,977.80 : x
  2. Step 2: Convert to fraction form
    72,326,411.40/108,489,617.10 = 43,604,977.80/x
  3. Step 3: Cross multiply
    72,326,411.40x = 108,489,617.10 × 43,604,977.80
  4. Step 4: Simplify right side
    72,326,411.40x = 4,730,687,345,176,000
  5. Step 5: Solve for x
    x = 4,730,687,345,176,000/72,326,411.40
  6. Step 6: Final answer
    x = 65,407,466.70

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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.