Home / 78,036.28-117,054.42-36,512.44

Finding the Fourth Proportional to 78,036.28, 117,054.42 and 36,512.44

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Solution

The fourth proportional to 78,036.28, 117,054.42 and 36,512.44 is: 54,768.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,036.28 : 117,054.42 = 36,512.44 : x
  2. Step 2: Convert to fraction form
    78,036.28/117,054.42 = 36,512.44/x
  3. Step 3: Cross multiply
    78,036.28x = 117,054.42 × 36,512.44
  4. Step 4: Simplify right side
    78,036.28x = 4,273,942,486.98
  5. Step 5: Solve for x
    x = 4,273,942,486.98/78,036.28
  6. Step 6: Final answer
    x = 54,768.66

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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.