Home / 40,778.92-61,098.60-31,890.84

Finding the Fourth Proportional to 40,778.92, 61,098.60 and 31,890.84

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Solution

The fourth proportional to 40,778.92, 61,098.60 and 31,890.84 is: 47,781.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,778.92 : 61,098.60 = 31,890.84 : x
  2. Step 2: Convert to fraction form
    40,778.92/61,098.60 = 31,890.84/x
  3. Step 3: Cross multiply
    40,778.92x = 61,098.60 × 31,890.84
  4. Step 4: Simplify right side
    40,778.92x = 1,948,485,676.82
  5. Step 5: Solve for x
    x = 1,948,485,676.82/40,778.92
  6. Step 6: Final answer
    x = 47,781.69

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1.5x scale

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.