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Finding the Fourth Proportional to 65,818.73, 90,829.28 and 37,138.61

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Solution

The fourth proportional to 65,818.73, 90,829.28 and 37,138.61 is: 51,250.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,818.73 : 90,829.28 = 37,138.61 : x
  2. Step 2: Convert to fraction form
    65,818.73/90,829.28 = 37,138.61/x
  3. Step 3: Cross multiply
    65,818.73x = 90,829.28 × 37,138.61
  4. Step 4: Simplify right side
    65,818.73x = 3,373,273,206.50
  5. Step 5: Solve for x
    x = 3,373,273,206.50/65,818.73
  6. Step 6: Final answer
    x = 51,250.96

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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.