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Finding the Fourth Proportional to 80,830.80, 111,548.88 and 45,023.76

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Solution

The fourth proportional to 80,830.80, 111,548.88 and 45,023.76 is: 62,134.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,830.80 : 111,548.88 = 45,023.76 : x
  2. Step 2: Convert to fraction form
    80,830.80/111,548.88 = 45,023.76/x
  3. Step 3: Cross multiply
    80,830.80x = 111,548.88 × 45,023.76
  4. Step 4: Simplify right side
    80,830.80x = 5,022,350,001.39
  5. Step 5: Solve for x
    x = 5,022,350,001.39/80,830.80
  6. Step 6: Final answer
    x = 62,134.11

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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.