Home / 40,691.57-61,037.96-12,611.30

Finding the Fourth Proportional to 40,691.57, 61,037.96 and 12,611.30

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Solution

The fourth proportional to 40,691.57, 61,037.96 and 12,611.30 is: 18,917.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,691.57 : 61,037.96 = 12,611.30 : x
  2. Step 2: Convert to fraction form
    40,691.57/61,037.96 = 12,611.30/x
  3. Step 3: Cross multiply
    40,691.57x = 61,037.96 × 12,611.30
  4. Step 4: Simplify right side
    40,691.57x = 769,767,656.70
  5. Step 5: Solve for x
    x = 769,767,656.70/40,691.57
  6. Step 6: Final answer
    x = 18,917.13

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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.