Home / 86,719.20-129,999.92-33,377.15

Finding the Fourth Proportional to 86,719.20, 129,999.92 and 33,377.15

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Solution

The fourth proportional to 86,719.20, 129,999.92 and 33,377.15 is: 50,035.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,719.20 : 129,999.92 = 33,377.15 : x
  2. Step 2: Convert to fraction form
    86,719.20/129,999.92 = 33,377.15/x
  3. Step 3: Cross multiply
    86,719.20x = 129,999.92 × 33,377.15
  4. Step 4: Simplify right side
    86,719.20x = 4,339,026,829.83
  5. Step 5: Solve for x
    x = 4,339,026,829.83/86,719.20
  6. Step 6: Final answer
    x = 50,035.37

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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.