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Finding the Fourth Proportional to 80,570.78, 120,814.67 and 36,159.46

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Solution

The fourth proportional to 80,570.78, 120,814.67 and 36,159.46 is: 54,220.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,570.78 : 120,814.67 = 36,159.46 : x
  2. Step 2: Convert to fraction form
    80,570.78/120,814.67 = 36,159.46/x
  3. Step 3: Cross multiply
    80,570.78x = 120,814.67 × 36,159.46
  4. Step 4: Simplify right side
    80,570.78x = 4,368,593,227.28
  5. Step 5: Solve for x
    x = 4,368,593,227.28/80,570.78
  6. Step 6: Final answer
    x = 54,220.57

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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.