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Finding the Fourth Proportional to 71,585.72, 98,791.27 and 39,754.88

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Solution

The fourth proportional to 71,585.72, 98,791.27 and 39,754.88 is: 54,863.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,585.72 : 98,791.27 = 39,754.88 : x
  2. Step 2: Convert to fraction form
    71,585.72/98,791.27 = 39,754.88/x
  3. Step 3: Cross multiply
    71,585.72x = 98,791.27 × 39,754.88
  4. Step 4: Simplify right side
    71,585.72x = 3,927,434,490.55
  5. Step 5: Solve for x
    x = 3,927,434,490.55/71,585.72
  6. Step 6: Final answer
    x = 54,863.38

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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.