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Finding the Fourth Proportional to 80,069.91, 119,929.91 and 40,559.19

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Solution

The fourth proportional to 80,069.91, 119,929.91 and 40,559.19 is: 60,750.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,069.91 : 119,929.91 = 40,559.19 : x
  2. Step 2: Convert to fraction form
    80,069.91/119,929.91 = 40,559.19/x
  3. Step 3: Cross multiply
    80,069.91x = 119,929.91 × 40,559.19
  4. Step 4: Simplify right side
    80,069.91x = 4,864,259,803.58
  5. Step 5: Solve for x
    x = 4,864,259,803.58/80,069.91
  6. Step 6: Final answer
    x = 60,750.16

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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.