Home / 86,248.19-129,331.32-30,081.48

Finding the Fourth Proportional to 86,248.19, 129,331.32 and 30,081.48

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Solution

The fourth proportional to 86,248.19, 129,331.32 and 30,081.48 is: 45,107.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,248.19 : 129,331.32 = 30,081.48 : x
  2. Step 2: Convert to fraction form
    86,248.19/129,331.32 = 30,081.48/x
  3. Step 3: Cross multiply
    86,248.19x = 129,331.32 × 30,081.48
  4. Step 4: Simplify right side
    86,248.19x = 3,890,476,918.16
  5. Step 5: Solve for x
    x = 3,890,476,918.16/86,248.19
  6. Step 6: Final answer
    x = 45,107.92

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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.