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Finding the Fourth Proportional to 80,894, 121,364.94 and 41,478.77

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Solution

The fourth proportional to 80,894, 121,364.94 and 41,478.77 is: 62,230.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,894 : 121,364.94 = 41,478.77 : x
  2. Step 2: Convert to fraction form
    80,894/121,364.94 = 41,478.77/x
  3. Step 3: Cross multiply
    80,894x = 121,364.94 × 41,478.77
  4. Step 4: Simplify right side
    80,894x = 5,034,068,432.32
  5. Step 5: Solve for x
    x = 5,034,068,432.32/80,894
  6. Step 6: Final answer
    x = 62,230.43

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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.