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Finding the Fourth Proportional to 65,218.67, 90,003.98 and 36,539.54

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Solution

The fourth proportional to 65,218.67, 90,003.98 and 36,539.54 is: 50,425.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,218.67 : 90,003.98 = 36,539.54 : x
  2. Step 2: Convert to fraction form
    65,218.67/90,003.98 = 36,539.54/x
  3. Step 3: Cross multiply
    65,218.67x = 90,003.98 × 36,539.54
  4. Step 4: Simplify right side
    65,218.67x = 3,288,703,668.70
  5. Step 5: Solve for x
    x = 3,288,703,668.70/65,218.67
  6. Step 6: Final answer
    x = 50,425.80

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1.5x scale

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.