Home / 54,453.90-81,664.65-21,154.80

Finding the Fourth Proportional to 54,453.90, 81,664.65 and 21,154.80

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Solution

The fourth proportional to 54,453.90, 81,664.65 and 21,154.80 is: 31,725.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,453.90 : 81,664.65 = 21,154.80 : x
  2. Step 2: Convert to fraction form
    54,453.90/81,664.65 = 21,154.80/x
  3. Step 3: Cross multiply
    54,453.90x = 81,664.65 × 21,154.80
  4. Step 4: Simplify right side
    54,453.90x = 1,727,599,337.82
  5. Step 5: Solve for x
    x = 1,727,599,337.82/54,453.90
  6. Step 6: Final answer
    x = 31,725.91

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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.