Home / 81,731.78-122,369.25-44,157.23

Finding the Fourth Proportional to 81,731.78, 122,369.25 and 44,157.23

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Solution

The fourth proportional to 81,731.78, 122,369.25 and 44,157.23 is: 66,112.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,731.78 : 122,369.25 = 44,157.23 : x
  2. Step 2: Convert to fraction form
    81,731.78/122,369.25 = 44,157.23/x
  3. Step 3: Cross multiply
    81,731.78x = 122,369.25 × 44,157.23
  4. Step 4: Simplify right side
    81,731.78x = 5,403,487,117.18
  5. Step 5: Solve for x
    x = 5,403,487,117.18/81,731.78
  6. Step 6: Final answer
    x = 66,112.44

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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.