Home / 86,019.32-129,046.92-43,348.74

Finding the Fourth Proportional to 86,019.32, 129,046.92 and 43,348.74

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Solution

The fourth proportional to 86,019.32, 129,046.92 and 43,348.74 is: 65,032.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,019.32 : 129,046.92 = 43,348.74 : x
  2. Step 2: Convert to fraction form
    86,019.32/129,046.92 = 43,348.74/x
  3. Step 3: Cross multiply
    86,019.32x = 129,046.92 × 43,348.74
  4. Step 4: Simplify right side
    86,019.32x = 5,594,021,382.88
  5. Step 5: Solve for x
    x = 5,594,021,382.88/86,019.32
  6. Step 6: Final answer
    x = 65,032.15

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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.