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Finding the Fourth Proportional to 98,381.59, 135,694.68 and 64,335.47

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Solution

The fourth proportional to 98,381.59, 135,694.68 and 64,335.47 is: 88,735.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,381.59 : 135,694.68 = 64,335.47 : x
  2. Step 2: Convert to fraction form
    98,381.59/135,694.68 = 64,335.47/x
  3. Step 3: Cross multiply
    98,381.59x = 135,694.68 × 64,335.47
  4. Step 4: Simplify right side
    98,381.59x = 8,729,980,094.57
  5. Step 5: Solve for x
    x = 8,729,980,094.57/98,381.59
  6. Step 6: Final answer
    x = 88,735.91

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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.