Home / 78,062.43-117,080.33-28,132.59

Finding the Fourth Proportional to 78,062.43, 117,080.33 and 28,132.59

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Solution

The fourth proportional to 78,062.43, 117,080.33 and 28,132.59 is: 42,194.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,062.43 : 117,080.33 = 28,132.59 : x
  2. Step 2: Convert to fraction form
    78,062.43/117,080.33 = 28,132.59/x
  3. Step 3: Cross multiply
    78,062.43x = 117,080.33 × 28,132.59
  4. Step 4: Simplify right side
    78,062.43x = 3,293,772,780.29
  5. Step 5: Solve for x
    x = 3,293,772,780.29/78,062.43
  6. Step 6: Final answer
    x = 42,194.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.