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Finding the Fourth Proportional to 80,659.35, 120,931.40 and 37,940.87

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Solution

The fourth proportional to 80,659.35, 120,931.40 and 37,940.87 is: 56,884.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,659.35 : 120,931.40 = 37,940.87 : x
  2. Step 2: Convert to fraction form
    80,659.35/120,931.40 = 37,940.87/x
  3. Step 3: Cross multiply
    80,659.35x = 120,931.40 × 37,940.87
  4. Step 4: Simplify right side
    80,659.35x = 4,588,241,731.96
  5. Step 5: Solve for x
    x = 4,588,241,731.96/80,659.35
  6. Step 6: Final answer
    x = 56,884.19

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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.