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Finding the Fourth Proportional to 79,822.80, 119,626.20 and 51,656.40

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Solution

The fourth proportional to 79,822.80, 119,626.20 and 51,656.40 is: 77,414.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,822.80 : 119,626.20 = 51,656.40 : x
  2. Step 2: Convert to fraction form
    79,822.80/119,626.20 = 51,656.40/x
  3. Step 3: Cross multiply
    79,822.80x = 119,626.20 × 51,656.40
  4. Step 4: Simplify right side
    79,822.80x = 6,179,458,837.68
  5. Step 5: Solve for x
    x = 6,179,458,837.68/79,822.80
  6. Step 6: Final answer
    x = 77,414.71

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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.