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Finding the Fourth Proportional to 81,415.72, 122,127.23 and 22,250.08

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Solution

The fourth proportional to 81,415.72, 122,127.23 and 22,250.08 is: 33,376.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,415.72 : 122,127.23 = 22,250.08 : x
  2. Step 2: Convert to fraction form
    81,415.72/122,127.23 = 22,250.08/x
  3. Step 3: Cross multiply
    81,415.72x = 122,127.23 × 22,250.08
  4. Step 4: Simplify right side
    81,415.72x = 2,717,340,637.68
  5. Step 5: Solve for x
    x = 2,717,340,637.68/81,415.72
  6. Step 6: Final answer
    x = 33,376.12

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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.