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Finding the Fourth Proportional to 86,480.92, 129,658.20 and 58,330.96

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Solution

The fourth proportional to 86,480.92, 129,658.20 and 58,330.96 is: 87,453.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,480.92 : 129,658.20 = 58,330.96 : x
  2. Step 2: Convert to fraction form
    86,480.92/129,658.20 = 58,330.96/x
  3. Step 3: Cross multiply
    86,480.92x = 129,658.20 × 58,330.96
  4. Step 4: Simplify right side
    86,480.92x = 7,563,087,277.87
  5. Step 5: Solve for x
    x = 7,563,087,277.87/86,480.92
  6. Step 6: Final answer
    x = 87,453.83

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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.