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Finding the Fourth Proportional to 90,382.68, 124,736.90 and 52,654.50

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Solution

The fourth proportional to 90,382.68, 124,736.90 and 52,654.50 is: 72,668.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,382.68 : 124,736.90 = 52,654.50 : x
  2. Step 2: Convert to fraction form
    90,382.68/124,736.90 = 52,654.50/x
  3. Step 3: Cross multiply
    90,382.68x = 124,736.90 × 52,654.50
  4. Step 4: Simplify right side
    90,382.68x = 6,567,958,837.78
  5. Step 5: Solve for x
    x = 6,567,958,837.78/90,382.68
  6. Step 6: Final answer
    x = 72,668.33

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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.