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Finding the Fourth Proportional to 88,663.92, 122,354.64 and 48,378

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Solution

The fourth proportional to 88,663.92, 122,354.64 and 48,378 is: 66,760.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,663.92 : 122,354.64 = 48,378 : x
  2. Step 2: Convert to fraction form
    88,663.92/122,354.64 = 48,378/x
  3. Step 3: Cross multiply
    88,663.92x = 122,354.64 × 48,378
  4. Step 4: Simplify right side
    88,663.92x = 5,919,272,773.92
  5. Step 5: Solve for x
    x = 5,919,272,773.92/88,663.92
  6. Step 6: Final answer
    x = 66,760.78

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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.