Home / 54,586.78-81,876.36-21,300.64

Finding the Fourth Proportional to 54,586.78, 81,876.36 and 21,300.64

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Solution

The fourth proportional to 54,586.78, 81,876.36 and 21,300.64 is: 31,949.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,586.78 : 81,876.36 = 21,300.64 : x
  2. Step 2: Convert to fraction form
    54,586.78/81,876.36 = 21,300.64/x
  3. Step 3: Cross multiply
    54,586.78x = 81,876.36 × 21,300.64
  4. Step 4: Simplify right side
    54,586.78x = 1,744,018,868.87
  5. Step 5: Solve for x
    x = 1,744,018,868.87/54,586.78
  6. Step 6: Final answer
    x = 31,949.47

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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.