Home / 42,120.36-63,136.80-17,149.68

Finding the Fourth Proportional to 42,120.36, 63,136.80 and 17,149.68

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Solution

The fourth proportional to 42,120.36, 63,136.80 and 17,149.68 is: 25,706.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,120.36 : 63,136.80 = 17,149.68 : x
  2. Step 2: Convert to fraction form
    42,120.36/63,136.80 = 17,149.68/x
  3. Step 3: Cross multiply
    42,120.36x = 63,136.80 × 17,149.68
  4. Step 4: Simplify right side
    42,120.36x = 1,082,775,916.22
  5. Step 5: Solve for x
    x = 1,082,775,916.22/42,120.36
  6. Step 6: Final answer
    x = 25,706.71

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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.