Home / 78,919.68-108,904.99-43,109.18

Finding the Fourth Proportional to 78,919.68, 108,904.99 and 43,109.18

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Solution

The fourth proportional to 78,919.68, 108,904.99 and 43,109.18 is: 59,488.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,919.68 : 108,904.99 = 43,109.18 : x
  2. Step 2: Convert to fraction form
    78,919.68/108,904.99 = 43,109.18/x
  3. Step 3: Cross multiply
    78,919.68x = 108,904.99 × 43,109.18
  4. Step 4: Simplify right side
    78,919.68x = 4,694,804,816.81
  5. Step 5: Solve for x
    x = 4,694,804,816.81/78,919.68
  6. Step 6: Final answer
    x = 59,488.39

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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.