Home / 86,029.40-129,080.52-41,689.16

Finding the Fourth Proportional to 86,029.40, 129,080.52 and 41,689.16

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Solution

The fourth proportional to 86,029.40, 129,080.52 and 41,689.16 is: 62,551.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,029.40 : 129,080.52 = 41,689.16 : x
  2. Step 2: Convert to fraction form
    86,029.40/129,080.52 = 41,689.16/x
  3. Step 3: Cross multiply
    86,029.40x = 129,080.52 × 41,689.16
  4. Step 4: Simplify right side
    86,029.40x = 5,381,258,451.16
  5. Step 5: Solve for x
    x = 5,381,258,451.16/86,029.40
  6. Step 6: Final answer
    x = 62,551.39

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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.