Home / 86,221.06-129,332.19-30,061.02

Finding the Fourth Proportional to 86,221.06, 129,332.19 and 30,061.02

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Solution

The fourth proportional to 86,221.06, 129,332.19 and 30,061.02 is: 45,091.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,221.06 : 129,332.19 = 30,061.02 : x
  2. Step 2: Convert to fraction form
    86,221.06/129,332.19 = 30,061.02/x
  3. Step 3: Cross multiply
    86,221.06x = 129,332.19 × 30,061.02
  4. Step 4: Simplify right side
    86,221.06x = 3,887,858,147.96
  5. Step 5: Solve for x
    x = 3,887,858,147.96/86,221.06
  6. Step 6: Final answer
    x = 45,091.75

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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.