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Finding the Fourth Proportional to 88,956.38, 122,747.68 and 53,138.78

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Solution

The fourth proportional to 88,956.38, 122,747.68 and 53,138.78 is: 73,324.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,956.38 : 122,747.68 = 53,138.78 : x
  2. Step 2: Convert to fraction form
    88,956.38/122,747.68 = 53,138.78/x
  3. Step 3: Cross multiply
    88,956.38x = 122,747.68 × 53,138.78
  4. Step 4: Simplify right side
    88,956.38x = 6,522,662,004.21
  5. Step 5: Solve for x
    x = 6,522,662,004.21/88,956.38
  6. Step 6: Final answer
    x = 73,324.28

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1.5x scale

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.