Home / 123,849.47-185,778.31-39,621.72

Finding the Fourth Proportional to 123,849.47, 185,778.31 and 39,621.72

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Solution

The fourth proportional to 123,849.47, 185,778.31 and 39,621.72 is: 59,433.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,849.47 : 185,778.31 = 39,621.72 : x
  2. Step 2: Convert to fraction form
    123,849.47/185,778.31 = 39,621.72/x
  3. Step 3: Cross multiply
    123,849.47x = 185,778.31 × 39,621.72
  4. Step 4: Simplify right side
    123,849.47x = 7,360,856,852.80
  5. Step 5: Solve for x
    x = 7,360,856,852.80/123,849.47
  6. Step 6: Final answer
    x = 59,433.90

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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.