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Finding the Fourth Proportional to 65,836.50, 90,854.55 and 36,028.50

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Solution

The fourth proportional to 65,836.50, 90,854.55 and 36,028.50 is: 49,719.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,836.50 : 90,854.55 = 36,028.50 : x
  2. Step 2: Convert to fraction form
    65,836.50/90,854.55 = 36,028.50/x
  3. Step 3: Cross multiply
    65,836.50x = 90,854.55 × 36,028.50
  4. Step 4: Simplify right side
    65,836.50x = 3,273,353,154.68
  5. Step 5: Solve for x
    x = 3,273,353,154.68/65,836.50
  6. Step 6: Final answer
    x = 49,719.43

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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.