Home / 71,990.13-107,901.10-54,163.50

Finding the Fourth Proportional to 71,990.13, 107,901.10 and 54,163.50

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Solution

The fourth proportional to 71,990.13, 107,901.10 and 54,163.50 is: 81,181.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,990.13 : 107,901.10 = 54,163.50 : x
  2. Step 2: Convert to fraction form
    71,990.13/107,901.10 = 54,163.50/x
  3. Step 3: Cross multiply
    71,990.13x = 107,901.10 × 54,163.50
  4. Step 4: Simplify right side
    71,990.13x = 5,844,301,195.20
  5. Step 5: Solve for x
    x = 5,844,301,195.20/71,990.13
  6. Step 6: Final answer
    x = 81,181.98

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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.