Home / 86,531.20-129,723.90-44,978.20

Finding the Fourth Proportional to 86,531.20, 129,723.90 and 44,978.20

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Solution

The fourth proportional to 86,531.20, 129,723.90 and 44,978.20 is: 67,429.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,531.20 : 129,723.90 = 44,978.20 : x
  2. Step 2: Convert to fraction form
    86,531.20/129,723.90 = 44,978.20/x
  3. Step 3: Cross multiply
    86,531.20x = 129,723.90 × 44,978.20
  4. Step 4: Simplify right side
    86,531.20x = 5,834,747,518.98
  5. Step 5: Solve for x
    x = 5,834,747,518.98/86,531.20
  6. Step 6: Final answer
    x = 67,429.41

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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.