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Finding the Fourth Proportional to 66,720.96, 100,195.95 and 59,241.42

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Solution

The fourth proportional to 66,720.96, 100,195.95 and 59,241.42 is: 88,963.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,720.96 : 100,195.95 = 59,241.42 : x
  2. Step 2: Convert to fraction form
    66,720.96/100,195.95 = 59,241.42/x
  3. Step 3: Cross multiply
    66,720.96x = 100,195.95 × 59,241.42
  4. Step 4: Simplify right side
    66,720.96x = 5,935,750,356.25
  5. Step 5: Solve for x
    x = 5,935,750,356.25/66,720.96
  6. Step 6: Final answer
    x = 88,963.80

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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.