Home / 82,891.56-124,338.20-66,356.70

Finding the Fourth Proportional to 82,891.56, 124,338.20 and 66,356.70

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Solution

The fourth proportional to 82,891.56, 124,338.20 and 66,356.70 is: 99,535.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,891.56 : 124,338.20 = 66,356.70 : x
  2. Step 2: Convert to fraction form
    82,891.56/124,338.20 = 66,356.70/x
  3. Step 3: Cross multiply
    82,891.56x = 124,338.20 × 66,356.70
  4. Step 4: Simplify right side
    82,891.56x = 8,250,672,635.94
  5. Step 5: Solve for x
    x = 8,250,672,635.94/82,891.56
  6. Step 6: Final answer
    x = 99,535.74

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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.