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Finding the Fourth Proportional to 80,278.86, 110,679.78 and 69,068.76

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Solution

The fourth proportional to 80,278.86, 110,679.78 and 69,068.76 is: 95,224.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,278.86 : 110,679.78 = 69,068.76 : x
  2. Step 2: Convert to fraction form
    80,278.86/110,679.78 = 69,068.76/x
  3. Step 3: Cross multiply
    80,278.86x = 110,679.78 × 69,068.76
  4. Step 4: Simplify right side
    80,278.86x = 7,644,515,161.67
  5. Step 5: Solve for x
    x = 7,644,515,161.67/80,278.86
  6. Step 6: Final answer
    x = 95,224.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.