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Finding the Fourth Proportional to 71,172.58, 98,227.92 and 40,957.28

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Solution

The fourth proportional to 71,172.58, 98,227.92 and 40,957.28 is: 56,526.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,172.58 : 98,227.92 = 40,957.28 : x
  2. Step 2: Convert to fraction form
    71,172.58/98,227.92 = 40,957.28/x
  3. Step 3: Cross multiply
    71,172.58x = 98,227.92 × 40,957.28
  4. Step 4: Simplify right side
    71,172.58x = 4,023,148,423.26
  5. Step 5: Solve for x
    x = 4,023,148,423.26/71,172.58
  6. Step 6: Final answer
    x = 56,526.66

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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.