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Finding the Fourth Proportional to 81,354.38, 122,033.72 and 25,950.38

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Solution

The fourth proportional to 81,354.38, 122,033.72 and 25,950.38 is: 38,926.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,354.38 : 122,033.72 = 25,950.38 : x
  2. Step 2: Convert to fraction form
    81,354.38/122,033.72 = 25,950.38/x
  3. Step 3: Cross multiply
    81,354.38x = 122,033.72 × 25,950.38
  4. Step 4: Simplify right side
    81,354.38x = 3,166,820,861.52
  5. Step 5: Solve for x
    x = 3,166,820,861.52/81,354.38
  6. Step 6: Final answer
    x = 38,926.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.