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Finding the Fourth Proportional to 108,881.55, 163,245.11 and 42,265.53

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Solution

The fourth proportional to 108,881.55, 163,245.11 and 42,265.53 is: 63,368.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,881.55 : 163,245.11 = 42,265.53 : x
  2. Step 2: Convert to fraction form
    108,881.55/163,245.11 = 42,265.53/x
  3. Step 3: Cross multiply
    108,881.55x = 163,245.11 × 42,265.53
  4. Step 4: Simplify right side
    108,881.55x = 6,899,640,882.73
  5. Step 5: Solve for x
    x = 6,899,640,882.73/108,881.55
  6. Step 6: Final answer
    x = 63,368.32

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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.