Home / 81,059.28-111,773.64-52,712.40

Finding the Fourth Proportional to 81,059.28, 111,773.64 and 52,712.40

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Solution

The fourth proportional to 81,059.28, 111,773.64 and 52,712.40 is: 72,685.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,059.28 : 111,773.64 = 52,712.40 : x
  2. Step 2: Convert to fraction form
    81,059.28/111,773.64 = 52,712.40/x
  3. Step 3: Cross multiply
    81,059.28x = 111,773.64 × 52,712.40
  4. Step 4: Simplify right side
    81,059.28x = 5,891,856,821.14
  5. Step 5: Solve for x
    x = 5,891,856,821.14/81,059.28
  6. Step 6: Final answer
    x = 72,685.78

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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.