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Finding the Fourth Proportional to 71,159.76, 98,195.28 and 39,329.28

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Solution

The fourth proportional to 71,159.76, 98,195.28 and 39,329.28 is: 54,271.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,159.76 : 98,195.28 = 39,329.28 : x
  2. Step 2: Convert to fraction form
    71,159.76/98,195.28 = 39,329.28/x
  3. Step 3: Cross multiply
    71,159.76x = 98,195.28 × 39,329.28
  4. Step 4: Simplify right side
    71,159.76x = 3,861,949,661.80
  5. Step 5: Solve for x
    x = 3,861,949,661.80/71,159.76
  6. Step 6: Final answer
    x = 54,271.54

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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.