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Finding the Fourth Proportional to 85,901.73, 128,821.01 and 29,727.42

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Solution

The fourth proportional to 85,901.73, 128,821.01 and 29,727.42 is: 44,580.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,901.73 : 128,821.01 = 29,727.42 : x
  2. Step 2: Convert to fraction form
    85,901.73/128,821.01 = 29,727.42/x
  3. Step 3: Cross multiply
    85,901.73x = 128,821.01 × 29,727.42
  4. Step 4: Simplify right side
    85,901.73x = 3,829,516,120.46
  5. Step 5: Solve for x
    x = 3,829,516,120.46/85,901.73
  6. Step 6: Final answer
    x = 44,580.20

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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.