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Finding the Fourth Proportional to 71,806.48, 107,542.52 and 69,315.28

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Solution

The fourth proportional to 71,806.48, 107,542.52 and 69,315.28 is: 103,811.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,806.48 : 107,542.52 = 69,315.28 : x
  2. Step 2: Convert to fraction form
    71,806.48/107,542.52 = 69,315.28/x
  3. Step 3: Cross multiply
    71,806.48x = 107,542.52 × 69,315.28
  4. Step 4: Simplify right side
    71,806.48x = 7,454,339,885.71
  5. Step 5: Solve for x
    x = 7,454,339,885.71/71,806.48
  6. Step 6: Final answer
    x = 103,811.52

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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.