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Finding the Fourth Proportional to 65,732.66, 90,754.86 and 38,883.79

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Solution

The fourth proportional to 65,732.66, 90,754.86 and 38,883.79 is: 53,685.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,732.66 : 90,754.86 = 38,883.79 : x
  2. Step 2: Convert to fraction form
    65,732.66/90,754.86 = 38,883.79/x
  3. Step 3: Cross multiply
    65,732.66x = 90,754.86 × 38,883.79
  4. Step 4: Simplify right side
    65,732.66x = 3,528,892,917.72
  5. Step 5: Solve for x
    x = 3,528,892,917.72/65,732.66
  6. Step 6: Final answer
    x = 53,685.53

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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.