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Finding the Fourth Proportional to 78,554.43, 117,813.88 and 22,393.34

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Solution

The fourth proportional to 78,554.43, 117,813.88 and 22,393.34 is: 33,584.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,554.43 : 117,813.88 = 22,393.34 : x
  2. Step 2: Convert to fraction form
    78,554.43/117,813.88 = 22,393.34/x
  3. Step 3: Cross multiply
    78,554.43x = 117,813.88 × 22,393.34
  4. Step 4: Simplify right side
    78,554.43x = 2,638,246,271.56
  5. Step 5: Solve for x
    x = 2,638,246,271.56/78,554.43
  6. Step 6: Final answer
    x = 33,584.95

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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.