Home / 86,448.30-129,672.45-53,999.70

Finding the Fourth Proportional to 86,448.30, 129,672.45 and 53,999.70

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Solution

The fourth proportional to 86,448.30, 129,672.45 and 53,999.70 is: 80,999.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,448.30 : 129,672.45 = 53,999.70 : x
  2. Step 2: Convert to fraction form
    86,448.30/129,672.45 = 53,999.70/x
  3. Step 3: Cross multiply
    86,448.30x = 129,672.45 × 53,999.70
  4. Step 4: Simplify right side
    86,448.30x = 7,002,273,398.27
  5. Step 5: Solve for x
    x = 7,002,273,398.27/86,448.30
  6. Step 6: Final answer
    x = 80,999.55

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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.