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Finding the Fourth Proportional to 90,759.32, 125,229.92 and 54,952.64

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Solution

The fourth proportional to 90,759.32, 125,229.92 and 54,952.64 is: 75,823.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,759.32 : 125,229.92 = 54,952.64 : x
  2. Step 2: Convert to fraction form
    90,759.32/125,229.92 = 54,952.64/x
  3. Step 3: Cross multiply
    90,759.32x = 125,229.92 × 54,952.64
  4. Step 4: Simplify right side
    90,759.32x = 6,881,713,810.08
  5. Step 5: Solve for x
    x = 6,881,713,810.08/90,759.32
  6. Step 6: Final answer
    x = 75,823.77

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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.