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Finding the Fourth Proportional to 80,755.76, 121,152.81 and 25,351.76

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Solution

The fourth proportional to 80,755.76, 121,152.81 and 25,351.76 is: 38,033.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,755.76 : 121,152.81 = 25,351.76 : x
  2. Step 2: Convert to fraction form
    80,755.76/121,152.81 = 25,351.76/x
  3. Step 3: Cross multiply
    80,755.76x = 121,152.81 × 25,351.76
  4. Step 4: Simplify right side
    80,755.76x = 3,071,436,962.45
  5. Step 5: Solve for x
    x = 3,071,436,962.45/80,755.76
  6. Step 6: Final answer
    x = 38,033.66

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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.