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Finding the Fourth Proportional to 79,865.39, 110,165.40 and 51,175.40

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Solution

The fourth proportional to 79,865.39, 110,165.40 and 51,175.40 is: 70,590.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,865.39 : 110,165.40 = 51,175.40 : x
  2. Step 2: Convert to fraction form
    79,865.39/110,165.40 = 51,175.40/x
  3. Step 3: Cross multiply
    79,865.39x = 110,165.40 × 51,175.40
  4. Step 4: Simplify right side
    79,865.39x = 5,637,757,860.33
  5. Step 5: Solve for x
    x = 5,637,757,860.33/79,865.39
  6. Step 6: Final answer
    x = 70,590.75

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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.