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Finding the Fourth Proportional to 71,468.56, 98,629.80 and 39,635.32

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Solution

The fourth proportional to 71,468.56, 98,629.80 and 39,635.32 is: 54,698.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,468.56 : 98,629.80 = 39,635.32 : x
  2. Step 2: Convert to fraction form
    71,468.56/98,629.80 = 39,635.32/x
  3. Step 3: Cross multiply
    71,468.56x = 98,629.80 × 39,635.32
  4. Step 4: Simplify right side
    71,468.56x = 3,909,223,684.54
  5. Step 5: Solve for x
    x = 3,909,223,684.54/71,468.56
  6. Step 6: Final answer
    x = 54,698.51

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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.