Home / 54,153.14-81,221.34-20,888.78

Finding the Fourth Proportional to 54,153.14, 81,221.34 and 20,888.78

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Solution

The fourth proportional to 54,153.14, 81,221.34 and 20,888.78 is: 31,329.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,153.14 : 81,221.34 = 20,888.78 : x
  2. Step 2: Convert to fraction form
    54,153.14/81,221.34 = 20,888.78/x
  3. Step 3: Cross multiply
    54,153.14x = 81,221.34 × 20,888.78
  4. Step 4: Simplify right side
    54,153.14x = 1,696,614,702.57
  5. Step 5: Solve for x
    x = 1,696,614,702.57/54,153.14
  6. Step 6: Final answer
    x = 31,329.94

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1.5x scale

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.