Home / 78,512.38-117,750.86-22,351.24

Finding the Fourth Proportional to 78,512.38, 117,750.86 and 22,351.24

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Solution

The fourth proportional to 78,512.38, 117,750.86 and 22,351.24 is: 33,521.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,512.38 : 117,750.86 = 22,351.24 : x
  2. Step 2: Convert to fraction form
    78,512.38/117,750.86 = 22,351.24/x
  3. Step 3: Cross multiply
    78,512.38x = 117,750.86 × 22,351.24
  4. Step 4: Simplify right side
    78,512.38x = 2,631,877,732.07
  5. Step 5: Solve for x
    x = 2,631,877,732.07/78,512.38
  6. Step 6: Final answer
    x = 33,521.82

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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.