Home / 92,013.20-138,052.20-39,438.80

Finding the Fourth Proportional to 92,013.20, 138,052.20 and 39,438.80

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Solution

The fourth proportional to 92,013.20, 138,052.20 and 39,438.80 is: 59,172.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,013.20 : 138,052.20 = 39,438.80 : x
  2. Step 2: Convert to fraction form
    92,013.20/138,052.20 = 39,438.80/x
  3. Step 3: Cross multiply
    92,013.20x = 138,052.20 × 39,438.80
  4. Step 4: Simplify right side
    92,013.20x = 5,444,613,105.36
  5. Step 5: Solve for x
    x = 5,444,613,105.36/92,013.20
  6. Step 6: Final answer
    x = 59,172.09

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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.