Home / 78,342.46-108,112.60-42,532.47

Finding the Fourth Proportional to 78,342.46, 108,112.60 and 42,532.47

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Solution

The fourth proportional to 78,342.46, 108,112.60 and 42,532.47 is: 58,694.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,342.46 : 108,112.60 = 42,532.47 : x
  2. Step 2: Convert to fraction form
    78,342.46/108,112.60 = 42,532.47/x
  3. Step 3: Cross multiply
    78,342.46x = 108,112.60 × 42,532.47
  4. Step 4: Simplify right side
    78,342.46x = 4,598,295,703.46
  5. Step 5: Solve for x
    x = 4,598,295,703.46/78,342.46
  6. Step 6: Final answer
    x = 58,694.81

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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.