Home / 87,829.68-131,875.74-86,517.48

Finding the Fourth Proportional to 87,829.68, 131,875.74 and 86,517.48

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Solution

The fourth proportional to 87,829.68, 131,875.74 and 86,517.48 is: 129,905.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,829.68 : 131,875.74 = 86,517.48 : x
  2. Step 2: Convert to fraction form
    87,829.68/131,875.74 = 86,517.48/x
  3. Step 3: Cross multiply
    87,829.68x = 131,875.74 × 86,517.48
  4. Step 4: Simplify right side
    87,829.68x = 11,409,556,697.94
  5. Step 5: Solve for x
    x = 11,409,556,697.94/87,829.68
  6. Step 6: Final answer
    x = 129,905.48

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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.