Home / 97,731.20-146,645.40-38,568.80

Finding the Fourth Proportional to 97,731.20, 146,645.40 and 38,568.80

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Solution

The fourth proportional to 97,731.20, 146,645.40 and 38,568.80 is: 57,872.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,731.20 : 146,645.40 = 38,568.80 : x
  2. Step 2: Convert to fraction form
    97,731.20/146,645.40 = 38,568.80/x
  3. Step 3: Cross multiply
    97,731.20x = 146,645.40 × 38,568.80
  4. Step 4: Simplify right side
    97,731.20x = 5,655,937,103.52
  5. Step 5: Solve for x
    x = 5,655,937,103.52/97,731.20
  6. Step 6: Final answer
    x = 57,872.38

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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.