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Finding the Fourth Proportional to 48,805.56, 67,351.06 and 28,659

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Solution

The fourth proportional to 48,805.56, 67,351.06 and 28,659 is: 39,549.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,805.56 : 67,351.06 = 28,659 : x
  2. Step 2: Convert to fraction form
    48,805.56/67,351.06 = 28,659/x
  3. Step 3: Cross multiply
    48,805.56x = 67,351.06 × 28,659
  4. Step 4: Simplify right side
    48,805.56x = 1,930,214,028.54
  5. Step 5: Solve for x
    x = 1,930,214,028.54/48,805.56
  6. Step 6: Final answer
    x = 39,549.06

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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.