Home / 71,861.40-99,171.72-40,030.29

Finding the Fourth Proportional to 71,861.40, 99,171.72 and 40,030.29

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Solution

The fourth proportional to 71,861.40, 99,171.72 and 40,030.29 is: 55,243.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,861.40 : 99,171.72 = 40,030.29 : x
  2. Step 2: Convert to fraction form
    71,861.40/99,171.72 = 40,030.29/x
  3. Step 3: Cross multiply
    71,861.40x = 99,171.72 × 40,030.29
  4. Step 4: Simplify right side
    71,861.40x = 3,969,872,711.40
  5. Step 5: Solve for x
    x = 3,969,872,711.40/71,861.40
  6. Step 6: Final answer
    x = 55,243.46

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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.