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Finding the Fourth Proportional to 72,463.20, 108,578.16 and 44,702.88

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Solution

The fourth proportional to 72,463.20, 108,578.16 and 44,702.88 is: 66,982.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,463.20 : 108,578.16 = 44,702.88 : x
  2. Step 2: Convert to fraction form
    72,463.20/108,578.16 = 44,702.88/x
  3. Step 3: Cross multiply
    72,463.20x = 108,578.16 × 44,702.88
  4. Step 4: Simplify right side
    72,463.20x = 4,853,756,457.10
  5. Step 5: Solve for x
    x = 4,853,756,457.10/72,463.20
  6. Step 6: Final answer
    x = 66,982.36

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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.