Home / 86,591.28-129,789.72-56,662.96

Finding the Fourth Proportional to 86,591.28, 129,789.72 and 56,662.96

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Solution

The fourth proportional to 86,591.28, 129,789.72 and 56,662.96 is: 84,930.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,591.28 : 129,789.72 = 56,662.96 : x
  2. Step 2: Convert to fraction form
    86,591.28/129,789.72 = 56,662.96/x
  3. Step 3: Cross multiply
    86,591.28x = 129,789.72 × 56,662.96
  4. Step 4: Simplify right side
    86,591.28x = 7,354,269,712.77
  5. Step 5: Solve for x
    x = 7,354,269,712.77/86,591.28
  6. Step 6: Final answer
    x = 84,930.83

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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.