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Finding the Fourth Proportional to 81,373.01, 122,053.44 and 25,213.55

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Solution

The fourth proportional to 81,373.01, 122,053.44 and 25,213.55 is: 37,818.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,373.01 : 122,053.44 = 25,213.55 : x
  2. Step 2: Convert to fraction form
    81,373.01/122,053.44 = 25,213.55/x
  3. Step 3: Cross multiply
    81,373.01x = 122,053.44 × 25,213.55
  4. Step 4: Simplify right side
    81,373.01x = 3,077,400,817.25
  5. Step 5: Solve for x
    x = 3,077,400,817.25/81,373.01
  6. Step 6: Final answer
    x = 37,818.45

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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.