Home / 79,186.97-109,278.05-43,378.28

Finding the Fourth Proportional to 79,186.97, 109,278.05 and 43,378.28

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Solution

The fourth proportional to 79,186.97, 109,278.05 and 43,378.28 is: 59,862.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,186.97 : 109,278.05 = 43,378.28 : x
  2. Step 2: Convert to fraction form
    79,186.97/109,278.05 = 43,378.28/x
  3. Step 3: Cross multiply
    79,186.97x = 109,278.05 × 43,378.28
  4. Step 4: Simplify right side
    79,186.97x = 4,740,293,412.81
  5. Step 5: Solve for x
    x = 4,740,293,412.81/79,186.97
  6. Step 6: Final answer
    x = 59,862.04

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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.