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Finding the Fourth Proportional to 65,906.28, 90,950.75 and 35,691.65

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Solution

The fourth proportional to 65,906.28, 90,950.75 and 35,691.65 is: 49,254.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,906.28 : 90,950.75 = 35,691.65 : x
  2. Step 2: Convert to fraction form
    65,906.28/90,950.75 = 35,691.65/x
  3. Step 3: Cross multiply
    65,906.28x = 90,950.75 × 35,691.65
  4. Step 4: Simplify right side
    65,906.28x = 3,246,182,336.24
  5. Step 5: Solve for x
    x = 3,246,182,336.24/65,906.28
  6. Step 6: Final answer
    x = 49,254.52

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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.