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Finding the Fourth Proportional to 78,612.39, 117,922.97 and 22,448.21

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Solution

The fourth proportional to 78,612.39, 117,922.97 and 22,448.21 is: 33,673.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,612.39 : 117,922.97 = 22,448.21 : x
  2. Step 2: Convert to fraction form
    78,612.39/117,922.97 = 22,448.21/x
  3. Step 3: Cross multiply
    78,612.39x = 117,922.97 × 22,448.21
  4. Step 4: Simplify right side
    78,612.39x = 2,647,159,060.89
  5. Step 5: Solve for x
    x = 2,647,159,060.89/78,612.39
  6. Step 6: Final answer
    x = 33,673.56

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1.5x scale

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.