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Finding the Fourth Proportional to 90,460.80, 124,816.32 and 52,729.92

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Solution

The fourth proportional to 90,460.80, 124,816.32 and 52,729.92 is: 72,755.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,460.80 : 124,816.32 = 52,729.92 : x
  2. Step 2: Convert to fraction form
    90,460.80/124,816.32 = 52,729.92/x
  3. Step 3: Cross multiply
    90,460.80x = 124,816.32 × 52,729.92
  4. Step 4: Simplify right side
    90,460.80x = 6,581,554,568.29
  5. Step 5: Solve for x
    x = 6,581,554,568.29/90,460.80
  6. Step 6: Final answer
    x = 72,755.87

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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.