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Finding the Fourth Proportional to 71,361.70, 107,042.55 and 47,860.90

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Solution

The fourth proportional to 71,361.70, 107,042.55 and 47,860.90 is: 71,791.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,361.70 : 107,042.55 = 47,860.90 : x
  2. Step 2: Convert to fraction form
    71,361.70/107,042.55 = 47,860.90/x
  3. Step 3: Cross multiply
    71,361.70x = 107,042.55 × 47,860.90
  4. Step 4: Simplify right side
    71,361.70x = 5,123,152,781.30
  5. Step 5: Solve for x
    x = 5,123,152,781.30/71,361.70
  6. Step 6: Final answer
    x = 71,791.35

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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.