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Finding the Fourth Proportional to 85,158.72, 117,520.17 and 47,432.97

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Solution

The fourth proportional to 85,158.72, 117,520.17 and 47,432.97 is: 65,458.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,158.72 : 117,520.17 = 47,432.97 : x
  2. Step 2: Convert to fraction form
    85,158.72/117,520.17 = 47,432.97/x
  3. Step 3: Cross multiply
    85,158.72x = 117,520.17 × 47,432.97
  4. Step 4: Simplify right side
    85,158.72x = 5,574,330,698.00
  5. Step 5: Solve for x
    x = 5,574,330,698.00/85,158.72
  6. Step 6: Final answer
    x = 65,458.13

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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.