Home / 86,621.70-129,932.55-49,167.30

Finding the Fourth Proportional to 86,621.70, 129,932.55 and 49,167.30

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Solution

The fourth proportional to 86,621.70, 129,932.55 and 49,167.30 is: 73,750.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,621.70 : 129,932.55 = 49,167.30 : x
  2. Step 2: Convert to fraction form
    86,621.70/129,932.55 = 49,167.30/x
  3. Step 3: Cross multiply
    86,621.70x = 129,932.55 × 49,167.30
  4. Step 4: Simplify right side
    86,621.70x = 6,388,432,665.62
  5. Step 5: Solve for x
    x = 6,388,432,665.62/86,621.70
  6. Step 6: Final answer
    x = 73,750.95

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Similar ratio
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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.