Home / 86,578.10-129,867.15-49,611.70

Finding the Fourth Proportional to 86,578.10, 129,867.15 and 49,611.70

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Solution

The fourth proportional to 86,578.10, 129,867.15 and 49,611.70 is: 74,417.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,578.10 : 129,867.15 = 49,611.70 : x
  2. Step 2: Convert to fraction form
    86,578.10/129,867.15 = 49,611.70/x
  3. Step 3: Cross multiply
    86,578.10x = 129,867.15 × 49,611.70
  4. Step 4: Simplify right side
    86,578.10x = 6,442,930,085.66
  5. Step 5: Solve for x
    x = 6,442,930,085.66/86,578.10
  6. Step 6: Final answer
    x = 74,417.55

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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.