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Finding the Fourth Proportional to 81,773.13, 122,659.70 and 25,613.71

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Solution

The fourth proportional to 81,773.13, 122,659.70 and 25,613.71 is: 38,420.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,773.13 : 122,659.70 = 25,613.71 : x
  2. Step 2: Convert to fraction form
    81,773.13/122,659.70 = 25,613.71/x
  3. Step 3: Cross multiply
    81,773.13x = 122,659.70 × 25,613.71
  4. Step 4: Simplify right side
    81,773.13x = 3,141,769,984.49
  5. Step 5: Solve for x
    x = 3,141,769,984.49/81,773.13
  6. Step 6: Final answer
    x = 38,420.57

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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.