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Finding the Fourth Proportional to 79,761.04, 110,069.31 and 45,305.54

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Solution

The fourth proportional to 79,761.04, 110,069.31 and 45,305.54 is: 62,521.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,761.04 : 110,069.31 = 45,305.54 : x
  2. Step 2: Convert to fraction form
    79,761.04/110,069.31 = 45,305.54/x
  3. Step 3: Cross multiply
    79,761.04x = 110,069.31 × 45,305.54
  4. Step 4: Simplify right side
    79,761.04x = 4,986,748,976.63
  5. Step 5: Solve for x
    x = 4,986,748,976.63/79,761.04
  6. Step 6: Final answer
    x = 62,521.11

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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.