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Finding the Fourth Proportional to 98,408.76, 135,765 and 60,617.40

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Solution

The fourth proportional to 98,408.76, 135,765 and 60,617.40 is: 83,627.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,408.76 : 135,765 = 60,617.40 : x
  2. Step 2: Convert to fraction form
    98,408.76/135,765 = 60,617.40/x
  3. Step 3: Cross multiply
    98,408.76x = 135,765 × 60,617.40
  4. Step 4: Simplify right side
    98,408.76x = 8,229,721,311
  5. Step 5: Solve for x
    x = 8,229,721,311/98,408.76
  6. Step 6: Final answer
    x = 83,627.93

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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.