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Finding the Fourth Proportional to 80,473.25, 111,053.09 and 45,145.25

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Solution

The fourth proportional to 80,473.25, 111,053.09 and 45,145.25 is: 62,300.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,473.25 : 111,053.09 = 45,145.25 : x
  2. Step 2: Convert to fraction form
    80,473.25/111,053.09 = 45,145.25/x
  3. Step 3: Cross multiply
    80,473.25x = 111,053.09 × 45,145.25
  4. Step 4: Simplify right side
    80,473.25x = 5,013,519,285.60
  5. Step 5: Solve for x
    x = 5,013,519,285.60/80,473.25
  6. Step 6: Final answer
    x = 62,300.45

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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.