Home / 86,180.68-129,201.16-38,761.05

Finding the Fourth Proportional to 86,180.68, 129,201.16 and 38,761.05

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Solution

The fourth proportional to 86,180.68, 129,201.16 and 38,761.05 is: 58,110.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,180.68 : 129,201.16 = 38,761.05 : x
  2. Step 2: Convert to fraction form
    86,180.68/129,201.16 = 38,761.05/x
  3. Step 3: Cross multiply
    86,180.68x = 129,201.16 × 38,761.05
  4. Step 4: Simplify right side
    86,180.68x = 5,007,972,622.82
  5. Step 5: Solve for x
    x = 5,007,972,622.82/86,180.68
  6. Step 6: Final answer
    x = 58,110.15

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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.