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Finding the Fourth Proportional to 71,570.38, 98,770.54 and 41,359.72

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Solution

The fourth proportional to 71,570.38, 98,770.54 and 41,359.72 is: 57,078.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,570.38 : 98,770.54 = 41,359.72 : x
  2. Step 2: Convert to fraction form
    71,570.38/98,770.54 = 41,359.72/x
  3. Step 3: Cross multiply
    71,570.38x = 98,770.54 × 41,359.72
  4. Step 4: Simplify right side
    71,570.38x = 4,085,121,878.65
  5. Step 5: Solve for x
    x = 4,085,121,878.65/71,570.38
  6. Step 6: Final answer
    x = 57,078.39

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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.