Home / 78,919.18-108,907.10-43,108.27

Finding the Fourth Proportional to 78,919.18, 108,907.10 and 43,108.27

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Solution

The fourth proportional to 78,919.18, 108,907.10 and 43,108.27 is: 59,488.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,919.18 : 108,907.10 = 43,108.27 : x
  2. Step 2: Convert to fraction form
    78,919.18/108,907.10 = 43,108.27/x
  3. Step 3: Cross multiply
    78,919.18x = 108,907.10 × 43,108.27
  4. Step 4: Simplify right side
    78,919.18x = 4,694,796,345.56
  5. Step 5: Solve for x
    x = 4,694,796,345.56/78,919.18
  6. Step 6: Final answer
    x = 59,488.66

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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.