Home / 55,136.20-82,613.10-31,721.80

Finding the Fourth Proportional to 55,136.20, 82,613.10 and 31,721.80

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Solution

The fourth proportional to 55,136.20, 82,613.10 and 31,721.80 is: 47,530.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,136.20 : 82,613.10 = 31,721.80 : x
  2. Step 2: Convert to fraction form
    55,136.20/82,613.10 = 31,721.80/x
  3. Step 3: Cross multiply
    55,136.20x = 82,613.10 × 31,721.80
  4. Step 4: Simplify right side
    55,136.20x = 2,620,636,235.58
  5. Step 5: Solve for x
    x = 2,620,636,235.58/55,136.20
  6. Step 6: Final answer
    x = 47,530.23

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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.