Home / 87,459.60-131,189.40-54,217.20

Finding the Fourth Proportional to 87,459.60, 131,189.40 and 54,217.20

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Solution

The fourth proportional to 87,459.60, 131,189.40 and 54,217.20 is: 81,325.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,459.60 : 131,189.40 = 54,217.20 : x
  2. Step 2: Convert to fraction form
    87,459.60/131,189.40 = 54,217.20/x
  3. Step 3: Cross multiply
    87,459.60x = 131,189.40 × 54,217.20
  4. Step 4: Simplify right side
    87,459.60x = 7,112,721,937.68
  5. Step 5: Solve for x
    x = 7,112,721,937.68/87,459.60
  6. Step 6: Final answer
    x = 81,325.80

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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.