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Finding the Fourth Proportional to 86,027.60, 129,057.72 and 29,865.52

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Solution

The fourth proportional to 86,027.60, 129,057.72 and 29,865.52 is: 44,803.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,027.60 : 129,057.72 = 29,865.52 : x
  2. Step 2: Convert to fraction form
    86,027.60/129,057.72 = 29,865.52/x
  3. Step 3: Cross multiply
    86,027.60x = 129,057.72 × 29,865.52
  4. Step 4: Simplify right side
    86,027.60x = 3,854,375,917.81
  5. Step 5: Solve for x
    x = 3,854,375,917.81/86,027.60
  6. Step 6: Final answer
    x = 44,803.95

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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.