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Finding the Fourth Proportional to 40,540.40, 60,859.20 and 22,785.20

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Solution

The fourth proportional to 40,540.40, 60,859.20 and 22,785.20 is: 34,205.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,540.40 : 60,859.20 = 22,785.20 : x
  2. Step 2: Convert to fraction form
    40,540.40/60,859.20 = 22,785.20/x
  3. Step 3: Cross multiply
    40,540.40x = 60,859.20 × 22,785.20
  4. Step 4: Simplify right side
    40,540.40x = 1,386,689,043.84
  5. Step 5: Solve for x
    x = 1,386,689,043.84/40,540.40
  6. Step 6: Final answer
    x = 34,205.11

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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.