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Finding the Fourth Proportional to 71,493.76, 98,661.51 and 39,662.66

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Solution

The fourth proportional to 71,493.76, 98,661.51 and 39,662.66 is: 54,734.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,493.76 : 98,661.51 = 39,662.66 : x
  2. Step 2: Convert to fraction form
    71,493.76/98,661.51 = 39,662.66/x
  3. Step 3: Cross multiply
    71,493.76x = 98,661.51 × 39,662.66
  4. Step 4: Simplify right side
    71,493.76x = 3,913,177,926.22
  5. Step 5: Solve for x
    x = 3,913,177,926.22/71,493.76
  6. Step 6: Final answer
    x = 54,734.54

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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.