Home / 54,446.78-81,631.55-21,138.77

Finding the Fourth Proportional to 54,446.78, 81,631.55 and 21,138.77

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Solution

The fourth proportional to 54,446.78, 81,631.55 and 21,138.77 is: 31,693.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,446.78 : 81,631.55 = 21,138.77 : x
  2. Step 2: Convert to fraction form
    54,446.78/81,631.55 = 21,138.77/x
  3. Step 3: Cross multiply
    54,446.78x = 81,631.55 × 21,138.77
  4. Step 4: Simplify right side
    54,446.78x = 1,725,590,046.34
  5. Step 5: Solve for x
    x = 1,725,590,046.34/54,446.78
  6. Step 6: Final answer
    x = 31,693.15

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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.