Home / 78,631.43-108,512.66-42,822.14

Finding the Fourth Proportional to 78,631.43, 108,512.66 and 42,822.14

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Solution

The fourth proportional to 78,631.43, 108,512.66 and 42,822.14 is: 59,095.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,631.43 : 108,512.66 = 42,822.14 : x
  2. Step 2: Convert to fraction form
    78,631.43/108,512.66 = 42,822.14/x
  3. Step 3: Cross multiply
    78,631.43x = 108,512.66 × 42,822.14
  4. Step 4: Simplify right side
    78,631.43x = 4,646,743,882.78
  5. Step 5: Solve for x
    x = 4,646,743,882.78/78,631.43
  6. Step 6: Final answer
    x = 59,095.25

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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.