Home / 77,891.17-107,489.87-42,081.16

Finding the Fourth Proportional to 77,891.17, 107,489.87 and 42,081.16

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Solution

The fourth proportional to 77,891.17, 107,489.87 and 42,081.16 is: 58,072.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,891.17 : 107,489.87 = 42,081.16 : x
  2. Step 2: Convert to fraction form
    77,891.17/107,489.87 = 42,081.16/x
  3. Step 3: Cross multiply
    77,891.17x = 107,489.87 × 42,081.16
  4. Step 4: Simplify right side
    77,891.17x = 4,523,298,207.44
  5. Step 5: Solve for x
    x = 4,523,298,207.44/77,891.17
  6. Step 6: Final answer
    x = 58,072.03

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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.