Home / 86,687.20-129,742.80-62,927.20

Finding the Fourth Proportional to 86,687.20, 129,742.80 and 62,927.20

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Solution

The fourth proportional to 86,687.20, 129,742.80 and 62,927.20 is: 94,181.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,687.20 : 129,742.80 = 62,927.20 : x
  2. Step 2: Convert to fraction form
    86,687.20/129,742.80 = 62,927.20/x
  3. Step 3: Cross multiply
    86,687.20x = 129,742.80 × 62,927.20
  4. Step 4: Simplify right side
    86,687.20x = 8,164,351,124.16
  5. Step 5: Solve for x
    x = 8,164,351,124.16/86,687.20
  6. Step 6: Final answer
    x = 94,181.74

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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.