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Finding the Fourth Proportional to 80,244.18, 120,366.87 and 21,079.74

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Solution

The fourth proportional to 80,244.18, 120,366.87 and 21,079.74 is: 31,619.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,244.18 : 120,366.87 = 21,079.74 : x
  2. Step 2: Convert to fraction form
    80,244.18/120,366.87 = 21,079.74/x
  3. Step 3: Cross multiply
    80,244.18x = 120,366.87 × 21,079.74
  4. Step 4: Simplify right side
    80,244.18x = 2,537,302,324.21
  5. Step 5: Solve for x
    x = 2,537,302,324.21/80,244.18
  6. Step 6: Final answer
    x = 31,619.77

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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.