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Finding the Fourth Proportional to 65,761.52, 90,725.40 and 41,883.92

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Solution

The fourth proportional to 65,761.52, 90,725.40 and 41,883.92 is: 57,783.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,761.52 : 90,725.40 = 41,883.92 : x
  2. Step 2: Convert to fraction form
    65,761.52/90,725.40 = 41,883.92/x
  3. Step 3: Cross multiply
    65,761.52x = 90,725.40 × 41,883.92
  4. Step 4: Simplify right side
    65,761.52x = 3,799,935,395.57
  5. Step 5: Solve for x
    x = 3,799,935,395.57/65,761.52
  6. Step 6: Final answer
    x = 57,783.57

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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.