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Finding the Fourth Proportional to 84,471.17, 126,706.74 and 38,874.27

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Solution

The fourth proportional to 84,471.17, 126,706.74 and 38,874.27 is: 58,311.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,471.17 : 126,706.74 = 38,874.27 : x
  2. Step 2: Convert to fraction form
    84,471.17/126,706.74 = 38,874.27/x
  3. Step 3: Cross multiply
    84,471.17x = 126,706.74 × 38,874.27
  4. Step 4: Simplify right side
    84,471.17x = 4,925,632,021.58
  5. Step 5: Solve for x
    x = 4,925,632,021.58/84,471.17
  6. Step 6: Final answer
    x = 58,311.40

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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.