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Finding the Fourth Proportional to 90,242.92, 124,459.68 and 67,634.98

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Solution

The fourth proportional to 90,242.92, 124,459.68 and 67,634.98 is: 93,279.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,242.92 : 124,459.68 = 67,634.98 : x
  2. Step 2: Convert to fraction form
    90,242.92/124,459.68 = 67,634.98/x
  3. Step 3: Cross multiply
    90,242.92x = 124,459.68 × 67,634.98
  4. Step 4: Simplify right side
    90,242.92x = 8,417,827,967.61
  5. Step 5: Solve for x
    x = 8,417,827,967.61/90,242.92
  6. Step 6: Final answer
    x = 93,279.65

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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.