Home / 54,423.57-81,619.89-21,136.53

Finding the Fourth Proportional to 54,423.57, 81,619.89 and 21,136.53

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Solution

The fourth proportional to 54,423.57, 81,619.89 and 21,136.53 is: 31,698.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,423.57 : 81,619.89 = 21,136.53 : x
  2. Step 2: Convert to fraction form
    54,423.57/81,619.89 = 21,136.53/x
  3. Step 3: Cross multiply
    54,423.57x = 81,619.89 × 21,136.53
  4. Step 4: Simplify right side
    54,423.57x = 1,725,161,253.58
  5. Step 5: Solve for x
    x = 1,725,161,253.58/54,423.57
  6. Step 6: Final answer
    x = 31,698.79

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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.