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Finding the Fourth Proportional to 98,508.96, 135,987.12 and 62,748

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Solution

The fourth proportional to 98,508.96, 135,987.12 and 62,748 is: 86,620.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,508.96 : 135,987.12 = 62,748 : x
  2. Step 2: Convert to fraction form
    98,508.96/135,987.12 = 62,748/x
  3. Step 3: Cross multiply
    98,508.96x = 135,987.12 × 62,748
  4. Step 4: Simplify right side
    98,508.96x = 8,532,919,805.76
  5. Step 5: Solve for x
    x = 8,532,919,805.76/98,508.96
  6. Step 6: Final answer
    x = 86,620.75

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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.