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Finding the Fourth Proportional to 81,204.57, 112,053.12 and 45,393.39

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Solution

The fourth proportional to 81,204.57, 112,053.12 and 45,393.39 is: 62,637.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,204.57 : 112,053.12 = 45,393.39 : x
  2. Step 2: Convert to fraction form
    81,204.57/112,053.12 = 45,393.39/x
  3. Step 3: Cross multiply
    81,204.57x = 112,053.12 × 45,393.39
  4. Step 4: Simplify right side
    81,204.57x = 5,086,470,976.88
  5. Step 5: Solve for x
    x = 5,086,470,976.88/81,204.57
  6. Step 6: Final answer
    x = 62,637.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.