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Finding the Fourth Proportional to 65,366.85, 90,212.36 and 38,517.69

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Solution

The fourth proportional to 65,366.85, 90,212.36 and 38,517.69 is: 53,158.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,366.85 : 90,212.36 = 38,517.69 : x
  2. Step 2: Convert to fraction form
    65,366.85/90,212.36 = 38,517.69/x
  3. Step 3: Cross multiply
    65,366.85x = 90,212.36 × 38,517.69
  4. Step 4: Simplify right side
    65,366.85x = 3,474,771,524.06
  5. Step 5: Solve for x
    x = 3,474,771,524.06/65,366.85
  6. Step 6: Final answer
    x = 53,158.01

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.