Home / 81,428.28-112,372.86-45,616.44

Finding the Fourth Proportional to 81,428.28, 112,372.86 and 45,616.44

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Solution

The fourth proportional to 81,428.28, 112,372.86 and 45,616.44 is: 62,951.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,428.28 : 112,372.86 = 45,616.44 : x
  2. Step 2: Convert to fraction form
    81,428.28/112,372.86 = 45,616.44/x
  3. Step 3: Cross multiply
    81,428.28x = 112,372.86 × 45,616.44
  4. Step 4: Simplify right side
    81,428.28x = 5,126,049,825.82
  5. Step 5: Solve for x
    x = 5,126,049,825.82/81,428.28
  6. Step 6: Final answer
    x = 62,951.71

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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.