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Finding the Fourth Proportional to 83,330.94, 124,997.21 and 21,001.44

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Solution

The fourth proportional to 83,330.94, 124,997.21 and 21,001.44 is: 31,502.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,330.94 : 124,997.21 = 21,001.44 : x
  2. Step 2: Convert to fraction form
    83,330.94/124,997.21 = 21,001.44/x
  3. Step 3: Cross multiply
    83,330.94x = 124,997.21 × 21,001.44
  4. Step 4: Simplify right side
    83,330.94x = 2,625,120,833.50
  5. Step 5: Solve for x
    x = 2,625,120,833.50/83,330.94
  6. Step 6: Final answer
    x = 31,502.36

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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.