Home / 71,845.01-99,146.11-40,013.90

Finding the Fourth Proportional to 71,845.01, 99,146.11 and 40,013.90

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Solution

The fourth proportional to 71,845.01, 99,146.11 and 40,013.90 is: 55,219.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,845.01 : 99,146.11 = 40,013.90 : x
  2. Step 2: Convert to fraction form
    71,845.01/99,146.11 = 40,013.90/x
  3. Step 3: Cross multiply
    71,845.01x = 99,146.11 × 40,013.90
  4. Step 4: Simplify right side
    71,845.01x = 3,967,222,330.86
  5. Step 5: Solve for x
    x = 3,967,222,330.86/71,845.01
  6. Step 6: Final answer
    x = 55,219.18

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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.