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Finding the Fourth Proportional to 90,812.38, 125,319.13 and 52,573.55

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Solution

The fourth proportional to 90,812.38, 125,319.13 and 52,573.55 is: 72,550.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,812.38 : 125,319.13 = 52,573.55 : x
  2. Step 2: Convert to fraction form
    90,812.38/125,319.13 = 52,573.55/x
  3. Step 3: Cross multiply
    90,812.38x = 125,319.13 × 52,573.55
  4. Step 4: Simplify right side
    90,812.38x = 6,588,471,113.08
  5. Step 5: Solve for x
    x = 6,588,471,113.08/90,812.38
  6. Step 6: Final answer
    x = 72,550.36

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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.