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Finding the Fourth Proportional to 91,251.60, 125,854.92 and 55,440.60

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Solution

The fourth proportional to 91,251.60, 125,854.92 and 55,440.60 is: 76,464.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,251.60 : 125,854.92 = 55,440.60 : x
  2. Step 2: Convert to fraction form
    91,251.60/125,854.92 = 55,440.60/x
  3. Step 3: Cross multiply
    91,251.60x = 125,854.92 × 55,440.60
  4. Step 4: Simplify right side
    91,251.60x = 6,977,472,277.75
  5. Step 5: Solve for x
    x = 6,977,472,277.75/91,251.60
  6. Step 6: Final answer
    x = 76,464.11

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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.