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Finding the Fourth Proportional to 80,418.40, 120,627.60 and 25,007.20

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Solution

The fourth proportional to 80,418.40, 120,627.60 and 25,007.20 is: 37,510.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,418.40 : 120,627.60 = 25,007.20 : x
  2. Step 2: Convert to fraction form
    80,418.40/120,627.60 = 25,007.20/x
  3. Step 3: Cross multiply
    80,418.40x = 120,627.60 × 25,007.20
  4. Step 4: Simplify right side
    80,418.40x = 3,016,558,518.72
  5. Step 5: Solve for x
    x = 3,016,558,518.72/80,418.40
  6. Step 6: Final answer
    x = 37,510.80

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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.