Home / 84,887.70-127,389.15-55,233.30

Finding the Fourth Proportional to 84,887.70, 127,389.15 and 55,233.30

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Solution

The fourth proportional to 84,887.70, 127,389.15 and 55,233.30 is: 82,887.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,887.70 : 127,389.15 = 55,233.30 : x
  2. Step 2: Convert to fraction form
    84,887.70/127,389.15 = 55,233.30/x
  3. Step 3: Cross multiply
    84,887.70x = 127,389.15 × 55,233.30
  4. Step 4: Simplify right side
    84,887.70x = 7,036,123,138.70
  5. Step 5: Solve for x
    x = 7,036,123,138.70/84,887.70
  6. Step 6: Final answer
    x = 82,887.43

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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.