Home / 54,743.40-82,136.70-21,457.80

Finding the Fourth Proportional to 54,743.40, 82,136.70 and 21,457.80

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Solution

The fourth proportional to 54,743.40, 82,136.70 and 21,457.80 is: 32,195.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,743.40 : 82,136.70 = 21,457.80 : x
  2. Step 2: Convert to fraction form
    54,743.40/82,136.70 = 21,457.80/x
  3. Step 3: Cross multiply
    54,743.40x = 82,136.70 × 21,457.80
  4. Step 4: Simplify right side
    54,743.40x = 1,762,472,881.26
  5. Step 5: Solve for x
    x = 1,762,472,881.26/54,743.40
  6. Step 6: Final answer
    x = 32,195.17

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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.