Home / 71,908.49-99,234.18-40,079.41

Finding the Fourth Proportional to 71,908.49, 99,234.18 and 40,079.41

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Solution

The fourth proportional to 71,908.49, 99,234.18 and 40,079.41 is: 55,309.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,908.49 : 99,234.18 = 40,079.41 : x
  2. Step 2: Convert to fraction form
    71,908.49/99,234.18 = 40,079.41/x
  3. Step 3: Cross multiply
    71,908.49x = 99,234.18 × 40,079.41
  4. Step 4: Simplify right side
    71,908.49x = 3,977,247,138.15
  5. Step 5: Solve for x
    x = 3,977,247,138.15/71,908.49
  6. Step 6: Final answer
    x = 55,309.84

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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.