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Finding the Fourth Proportional to 114,680.40, 171,991.80 and 40,791.12

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Solution

The fourth proportional to 114,680.40, 171,991.80 and 40,791.12 is: 61,176.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,680.40 : 171,991.80 = 40,791.12 : x
  2. Step 2: Convert to fraction form
    114,680.40/171,991.80 = 40,791.12/x
  3. Step 3: Cross multiply
    114,680.40x = 171,991.80 × 40,791.12
  4. Step 4: Simplify right side
    114,680.40x = 7,015,738,152.82
  5. Step 5: Solve for x
    x = 7,015,738,152.82/114,680.40
  6. Step 6: Final answer
    x = 61,176.44

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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.