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Finding the Fourth Proportional to 63,181, 87,189.78 and 38,035.36

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Solution

The fourth proportional to 63,181, 87,189.78 and 38,035.36 is: 52,488.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,181 : 87,189.78 = 38,035.36 : x
  2. Step 2: Convert to fraction form
    63,181/87,189.78 = 38,035.36/x
  3. Step 3: Cross multiply
    63,181x = 87,189.78 × 38,035.36
  4. Step 4: Simplify right side
    63,181x = 3,316,294,670.62
  5. Step 5: Solve for x
    x = 3,316,294,670.62/63,181
  6. Step 6: Final answer
    x = 52,488.80

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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.