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Finding the Fourth Proportional to 103,445.76, 155,245.92 and 40,275.84

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Solution

The fourth proportional to 103,445.76, 155,245.92 and 40,275.84 is: 60,443.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,445.76 : 155,245.92 = 40,275.84 : x
  2. Step 2: Convert to fraction form
    103,445.76/155,245.92 = 40,275.84/x
  3. Step 3: Cross multiply
    103,445.76x = 155,245.92 × 40,275.84
  4. Step 4: Simplify right side
    103,445.76x = 6,252,659,834.57
  5. Step 5: Solve for x
    x = 6,252,659,834.57/103,445.76
  6. Step 6: Final answer
    x = 60,443.85

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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.