Home / 80,860.47-121,156.64-49,174.70

Finding the Fourth Proportional to 80,860.47, 121,156.64 and 49,174.70

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Solution

The fourth proportional to 80,860.47, 121,156.64 and 49,174.70 is: 73,680.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,860.47 : 121,156.64 = 49,174.70 : x
  2. Step 2: Convert to fraction form
    80,860.47/121,156.64 = 49,174.70/x
  3. Step 3: Cross multiply
    80,860.47x = 121,156.64 × 49,174.70
  4. Step 4: Simplify right side
    80,860.47x = 5,957,840,573.35
  5. Step 5: Solve for x
    x = 5,957,840,573.35/80,860.47
  6. Step 6: Final answer
    x = 73,680.51

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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.