Home / 71,421.28-107,091.76-29,289.76

Finding the Fourth Proportional to 71,421.28, 107,091.76 and 29,289.76

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Solution

The fourth proportional to 71,421.28, 107,091.76 and 29,289.76 is: 43,918.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,421.28 : 107,091.76 = 29,289.76 : x
  2. Step 2: Convert to fraction form
    71,421.28/107,091.76 = 29,289.76/x
  3. Step 3: Cross multiply
    71,421.28x = 107,091.76 × 29,289.76
  4. Step 4: Simplify right side
    71,421.28x = 3,136,691,948.38
  5. Step 5: Solve for x
    x = 3,136,691,948.38/71,421.28
  6. Step 6: Final answer
    x = 43,918.17

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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.