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Finding the Fourth Proportional to 78,824.84, 118,233.95 and 36,690.44

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Solution

The fourth proportional to 78,824.84, 118,233.95 and 36,690.44 is: 55,034.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,824.84 : 118,233.95 = 36,690.44 : x
  2. Step 2: Convert to fraction form
    78,824.84/118,233.95 = 36,690.44/x
  3. Step 3: Cross multiply
    78,824.84x = 118,233.95 × 36,690.44
  4. Step 4: Simplify right side
    78,824.84x = 4,338,054,873.82
  5. Step 5: Solve for x
    x = 4,338,054,873.82/78,824.84
  6. Step 6: Final answer
    x = 55,034.11

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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.