Home / 81,536.78-112,472.97-51,274.10

Finding the Fourth Proportional to 81,536.78, 112,472.97 and 51,274.10

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Solution

The fourth proportional to 81,536.78, 112,472.97 and 51,274.10 is: 70,728.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,536.78 : 112,472.97 = 51,274.10 : x
  2. Step 2: Convert to fraction form
    81,536.78/112,472.97 = 51,274.10/x
  3. Step 3: Cross multiply
    81,536.78x = 112,472.97 × 51,274.10
  4. Step 4: Simplify right side
    81,536.78x = 5,766,950,311.08
  5. Step 5: Solve for x
    x = 5,766,950,311.08/81,536.78
  6. Step 6: Final answer
    x = 70,728.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.