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Finding the Fourth Proportional to 71,114.64, 98,138.54 and 38,849.72

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Solution

The fourth proportional to 71,114.64, 98,138.54 and 38,849.72 is: 53,612.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,114.64 : 98,138.54 = 38,849.72 : x
  2. Step 2: Convert to fraction form
    71,114.64/98,138.54 = 38,849.72/x
  3. Step 3: Cross multiply
    71,114.64x = 98,138.54 × 38,849.72
  4. Step 4: Simplify right side
    71,114.64x = 3,812,654,115.27
  5. Step 5: Solve for x
    x = 3,812,654,115.27/71,114.64
  6. Step 6: Final answer
    x = 53,612.79

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1.5x scale

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.