Home / 74,015.80-111,023.70-51,854.20

Finding the Fourth Proportional to 74,015.80, 111,023.70 and 51,854.20

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Solution

The fourth proportional to 74,015.80, 111,023.70 and 51,854.20 is: 77,781.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,015.80 : 111,023.70 = 51,854.20 : x
  2. Step 2: Convert to fraction form
    74,015.80/111,023.70 = 51,854.20/x
  3. Step 3: Cross multiply
    74,015.80x = 111,023.70 × 51,854.20
  4. Step 4: Simplify right side
    74,015.80x = 5,757,045,144.54
  5. Step 5: Solve for x
    x = 5,757,045,144.54/74,015.80
  6. Step 6: Final answer
    x = 77,781.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.