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Finding the Fourth Proportional to 80,012.52, 120,018.72 and 23,851.20

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Solution

The fourth proportional to 80,012.52, 120,018.72 and 23,851.20 is: 35,776.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,012.52 : 120,018.72 = 23,851.20 : x
  2. Step 2: Convert to fraction form
    80,012.52/120,018.72 = 23,851.20/x
  3. Step 3: Cross multiply
    80,012.52x = 120,018.72 × 23,851.20
  4. Step 4: Simplify right side
    80,012.52x = 2,862,590,494.46
  5. Step 5: Solve for x
    x = 2,862,590,494.46/80,012.52
  6. Step 6: Final answer
    x = 35,776.78

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1.5x scale

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.