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Finding the Fourth Proportional to 72,733.60, 109,154.48 and 54,057.12

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Solution

The fourth proportional to 72,733.60, 109,154.48 and 54,057.12 is: 81,125.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,733.60 : 109,154.48 = 54,057.12 : x
  2. Step 2: Convert to fraction form
    72,733.60/109,154.48 = 54,057.12/x
  3. Step 3: Cross multiply
    72,733.60x = 109,154.48 × 54,057.12
  4. Step 4: Simplify right side
    72,733.60x = 5,900,576,823.90
  5. Step 5: Solve for x
    x = 5,900,576,823.90/72,733.60
  6. Step 6: Final answer
    x = 81,125.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.