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Finding the Fourth Proportional to 40,842.38, 61,267 and 11,260.20

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Solution

The fourth proportional to 40,842.38, 61,267 and 11,260.20 is: 16,891.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,842.38 : 61,267 = 11,260.20 : x
  2. Step 2: Convert to fraction form
    40,842.38/61,267 = 11,260.20/x
  3. Step 3: Cross multiply
    40,842.38x = 61,267 × 11,260.20
  4. Step 4: Simplify right side
    40,842.38x = 689,878,673.40
  5. Step 5: Solve for x
    x = 689,878,673.40/40,842.38
  6. Step 6: Final answer
    x = 16,891.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.