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Finding the Fourth Proportional to 81,616.44, 112,641.71 and 45,808.43

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Solution

The fourth proportional to 81,616.44, 112,641.71 and 45,808.43 is: 63,221.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,616.44 : 112,641.71 = 45,808.43 : x
  2. Step 2: Convert to fraction form
    81,616.44/112,641.71 = 45,808.43/x
  3. Step 3: Cross multiply
    81,616.44x = 112,641.71 × 45,808.43
  4. Step 4: Simplify right side
    81,616.44x = 5,159,939,940.18
  5. Step 5: Solve for x
    x = 5,159,939,940.18/81,616.44
  6. Step 6: Final answer
    x = 63,221.82

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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.