Home / 86,414.40-129,672.60-36,491.24

Finding the Fourth Proportional to 86,414.40, 129,672.60 and 36,491.24

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Solution

The fourth proportional to 86,414.40, 129,672.60 and 36,491.24 is: 54,758.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,414.40 : 129,672.60 = 36,491.24 : x
  2. Step 2: Convert to fraction form
    86,414.40/129,672.60 = 36,491.24/x
  3. Step 3: Cross multiply
    86,414.40x = 129,672.60 × 36,491.24
  4. Step 4: Simplify right side
    86,414.40x = 4,731,913,968.02
  5. Step 5: Solve for x
    x = 4,731,913,968.02/86,414.40
  6. Step 6: Final answer
    x = 54,758.40

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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.