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Finding the Fourth Proportional to 71,128.91, 106,708.35 and 24,385.43

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Solution

The fourth proportional to 71,128.91, 106,708.35 and 24,385.43 is: 36,583.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,128.91 : 106,708.35 = 24,385.43 : x
  2. Step 2: Convert to fraction form
    71,128.91/106,708.35 = 24,385.43/x
  3. Step 3: Cross multiply
    71,128.91x = 106,708.35 × 24,385.43
  4. Step 4: Simplify right side
    71,128.91x = 2,602,128,999.34
  5. Step 5: Solve for x
    x = 2,602,128,999.34/71,128.91
  6. Step 6: Final answer
    x = 36,583.28

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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.