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Finding the Fourth Proportional to 65,538.96, 90,446.94 and 36,859.20

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Solution

The fourth proportional to 65,538.96, 90,446.94 and 36,859.20 is: 50,867.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,538.96 : 90,446.94 = 36,859.20 : x
  2. Step 2: Convert to fraction form
    65,538.96/90,446.94 = 36,859.20/x
  3. Step 3: Cross multiply
    65,538.96x = 90,446.94 × 36,859.20
  4. Step 4: Simplify right side
    65,538.96x = 3,333,801,850.85
  5. Step 5: Solve for x
    x = 3,333,801,850.85/65,538.96
  6. Step 6: Final answer
    x = 50,867.48

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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.