Home / 78,919.13-108,907.74-43,109.15

Finding the Fourth Proportional to 78,919.13, 108,907.74 and 43,109.15

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Solution

The fourth proportional to 78,919.13, 108,907.74 and 43,109.15 is: 59,490.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,919.13 : 108,907.74 = 43,109.15 : x
  2. Step 2: Convert to fraction form
    78,919.13/108,907.74 = 43,109.15/x
  3. Step 3: Cross multiply
    78,919.13x = 108,907.74 × 43,109.15
  4. Step 4: Simplify right side
    78,919.13x = 4,694,919,555.28
  5. Step 5: Solve for x
    x = 4,694,919,555.28/78,919.13
  6. Step 6: Final answer
    x = 59,490.26

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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.