Home / 71,861.22-99,171.54-40,030.08

Finding the Fourth Proportional to 71,861.22, 99,171.54 and 40,030.08

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Solution

The fourth proportional to 71,861.22, 99,171.54 and 40,030.08 is: 55,243.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,861.22 : 99,171.54 = 40,030.08 : x
  2. Step 2: Convert to fraction form
    71,861.22/99,171.54 = 40,030.08/x
  3. Step 3: Cross multiply
    71,861.22x = 99,171.54 × 40,030.08
  4. Step 4: Simplify right side
    71,861.22x = 3,969,844,679.92
  5. Step 5: Solve for x
    x = 3,969,844,679.92/71,861.22
  6. Step 6: Final answer
    x = 55,243.21

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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.