Home / 78,342.26-108,112.54-42,532.43

Finding the Fourth Proportional to 78,342.26, 108,112.54 and 42,532.43

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Solution

The fourth proportional to 78,342.26, 108,112.54 and 42,532.43 is: 58,694.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,342.26 : 108,112.54 = 42,532.43 : x
  2. Step 2: Convert to fraction form
    78,342.26/108,112.54 = 42,532.43/x
  3. Step 3: Cross multiply
    78,342.26x = 108,112.54 × 42,532.43
  4. Step 4: Simplify right side
    78,342.26x = 4,598,289,039.67
  5. Step 5: Solve for x
    x = 4,598,289,039.67/78,342.26
  6. Step 6: Final answer
    x = 58,694.87

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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.