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Finding the Fourth Proportional to 80,963.47, 111,731.03 and 45,149.64

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Solution

The fourth proportional to 80,963.47, 111,731.03 and 45,149.64 is: 62,307.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,963.47 : 111,731.03 = 45,149.64 : x
  2. Step 2: Convert to fraction form
    80,963.47/111,731.03 = 45,149.64/x
  3. Step 3: Cross multiply
    80,963.47x = 111,731.03 × 45,149.64
  4. Step 4: Simplify right side
    80,963.47x = 5,044,614,996.93
  5. Step 5: Solve for x
    x = 5,044,614,996.93/80,963.47
  6. Step 6: Final answer
    x = 62,307.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.