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Finding the Fourth Proportional to 71,693.04, 98,934.36 and 39,861.36

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Solution

The fourth proportional to 71,693.04, 98,934.36 and 39,861.36 is: 55,007.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,693.04 : 98,934.36 = 39,861.36 : x
  2. Step 2: Convert to fraction form
    71,693.04/98,934.36 = 39,861.36/x
  3. Step 3: Cross multiply
    71,693.04x = 98,934.36 × 39,861.36
  4. Step 4: Simplify right side
    71,693.04x = 3,943,658,140.33
  5. Step 5: Solve for x
    x = 3,943,658,140.33/71,693.04
  6. Step 6: Final answer
    x = 55,007.55

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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.