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Finding the Fourth Proportional to 78,787.50, 118,114.97 and 36,646.17

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Solution

The fourth proportional to 78,787.50, 118,114.97 and 36,646.17 is: 54,938.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,787.50 : 118,114.97 = 36,646.17 : x
  2. Step 2: Convert to fraction form
    78,787.50/118,114.97 = 36,646.17/x
  3. Step 3: Cross multiply
    78,787.50x = 118,114.97 × 36,646.17
  4. Step 4: Simplify right side
    78,787.50x = 4,328,461,086.93
  5. Step 5: Solve for x
    x = 4,328,461,086.93/78,787.50
  6. Step 6: Final answer
    x = 54,938.42

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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.