Home / 86,381.20-129,589.98-48,959.20

Finding the Fourth Proportional to 86,381.20, 129,589.98 and 48,959.20

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Solution

The fourth proportional to 86,381.20, 129,589.98 and 48,959.20 is: 73,449.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,381.20 : 129,589.98 = 48,959.20 : x
  2. Step 2: Convert to fraction form
    86,381.20/129,589.98 = 48,959.20/x
  3. Step 3: Cross multiply
    86,381.20x = 129,589.98 × 48,959.20
  4. Step 4: Simplify right side
    86,381.20x = 6,344,621,748.82
  5. Step 5: Solve for x
    x = 6,344,621,748.82/86,381.20
  6. Step 6: Final answer
    x = 73,449.10

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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.