Home / 54,453.40-81,663.90-21,154.30

Finding the Fourth Proportional to 54,453.40, 81,663.90 and 21,154.30

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Solution

The fourth proportional to 54,453.40, 81,663.90 and 21,154.30 is: 31,725.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,453.40 : 81,663.90 = 21,154.30 : x
  2. Step 2: Convert to fraction form
    54,453.40/81,663.90 = 21,154.30/x
  3. Step 3: Cross multiply
    54,453.40x = 81,663.90 × 21,154.30
  4. Step 4: Simplify right side
    54,453.40x = 1,727,542,639.77
  5. Step 5: Solve for x
    x = 1,727,542,639.77/54,453.40
  6. Step 6: Final answer
    x = 31,725.16

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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.