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Finding the Fourth Proportional to 65,149.80, 89,908.61 and 36,854.88

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Solution

The fourth proportional to 65,149.80, 89,908.61 and 36,854.88 is: 50,860.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,149.80 : 89,908.61 = 36,854.88 : x
  2. Step 2: Convert to fraction form
    65,149.80/89,908.61 = 36,854.88/x
  3. Step 3: Cross multiply
    65,149.80x = 89,908.61 × 36,854.88
  4. Step 4: Simplify right side
    65,149.80x = 3,313,571,032.52
  5. Step 5: Solve for x
    x = 3,313,571,032.52/65,149.80
  6. Step 6: Final answer
    x = 50,860.80

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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.