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Finding the Fourth Proportional to 90,351.32, 135,734.72 and 63,758.52

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Solution

The fourth proportional to 90,351.32, 135,734.72 and 63,758.52 is: 95,784.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,351.32 : 135,734.72 = 63,758.52 : x
  2. Step 2: Convert to fraction form
    90,351.32/135,734.72 = 63,758.52/x
  3. Step 3: Cross multiply
    90,351.32x = 135,734.72 × 63,758.52
  4. Step 4: Simplify right side
    90,351.32x = 8,654,244,541.02
  5. Step 5: Solve for x
    x = 8,654,244,541.02/90,351.32
  6. Step 6: Final answer
    x = 95,784.38

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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.