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Finding the Fourth Proportional to 72,440.43, 108,660.13 and 22,520.45

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Solution

The fourth proportional to 72,440.43, 108,660.13 and 22,520.45 is: 33,780.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,440.43 : 108,660.13 = 22,520.45 : x
  2. Step 2: Convert to fraction form
    72,440.43/108,660.13 = 22,520.45/x
  3. Step 3: Cross multiply
    72,440.43x = 108,660.13 × 22,520.45
  4. Step 4: Simplify right side
    72,440.43x = 2,447,074,755.47
  5. Step 5: Solve for x
    x = 2,447,074,755.47/72,440.43
  6. Step 6: Final answer
    x = 33,780.51

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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.