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Finding the Fourth Proportional to 65,926.62, 90,978.84 and 39,082.32

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Solution

The fourth proportional to 65,926.62, 90,978.84 and 39,082.32 is: 53,933.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,926.62 : 90,978.84 = 39,082.32 : x
  2. Step 2: Convert to fraction form
    65,926.62/90,978.84 = 39,082.32/x
  3. Step 3: Cross multiply
    65,926.62x = 90,978.84 × 39,082.32
  4. Step 4: Simplify right side
    65,926.62x = 3,555,664,138.11
  5. Step 5: Solve for x
    x = 3,555,664,138.11/65,926.62
  6. Step 6: Final answer
    x = 53,933.66

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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.