Home / 71,991.74-99,348.32-40,160.61

Finding the Fourth Proportional to 71,991.74, 99,348.32 and 40,160.61

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Solution

The fourth proportional to 71,991.74, 99,348.32 and 40,160.61 is: 55,421.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,991.74 : 99,348.32 = 40,160.61 : x
  2. Step 2: Convert to fraction form
    71,991.74/99,348.32 = 40,160.61/x
  3. Step 3: Cross multiply
    71,991.74x = 99,348.32 × 40,160.61
  4. Step 4: Simplify right side
    71,991.74x = 3,989,889,234.08
  5. Step 5: Solve for x
    x = 3,989,889,234.08/71,991.74
  6. Step 6: Final answer
    x = 55,421.49

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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.