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Finding the Fourth Proportional to 108,662.52, 162,962.12 and 42,087.80

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Solution

The fourth proportional to 108,662.52, 162,962.12 and 42,087.80 is: 63,119.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,662.52 : 162,962.12 = 42,087.80 : x
  2. Step 2: Convert to fraction form
    108,662.52/162,962.12 = 42,087.80/x
  3. Step 3: Cross multiply
    108,662.52x = 162,962.12 × 42,087.80
  4. Step 4: Simplify right side
    108,662.52x = 6,858,717,114.14
  5. Step 5: Solve for x
    x = 6,858,717,114.14/108,662.52
  6. Step 6: Final answer
    x = 63,119.44

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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.