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Finding the Fourth Proportional to 80,660, 111,310.80 and 45,332

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Solution

The fourth proportional to 80,660, 111,310.80 and 45,332 is: 62,558.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,660 : 111,310.80 = 45,332 : x
  2. Step 2: Convert to fraction form
    80,660/111,310.80 = 45,332/x
  3. Step 3: Cross multiply
    80,660x = 111,310.80 × 45,332
  4. Step 4: Simplify right side
    80,660x = 5,045,941,185.60
  5. Step 5: Solve for x
    x = 5,045,941,185.60/80,660
  6. Step 6: Final answer
    x = 62,558.16

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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.