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Finding the Fourth Proportional to 78,787.90, 118,146.98 and 22,614.96

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Solution

The fourth proportional to 78,787.90, 118,146.98 and 22,614.96 is: 33,912.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,787.90 : 118,146.98 = 22,614.96 : x
  2. Step 2: Convert to fraction form
    78,787.90/118,146.98 = 22,614.96/x
  3. Step 3: Cross multiply
    78,787.90x = 118,146.98 × 22,614.96
  4. Step 4: Simplify right side
    78,787.90x = 2,671,889,226.82
  5. Step 5: Solve for x
    x = 2,671,889,226.82/78,787.90
  6. Step 6: Final answer
    x = 33,912.43

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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.