Home / 42,491.25-63,736.89-20,237.16

Finding the Fourth Proportional to 42,491.25, 63,736.89 and 20,237.16

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Solution

The fourth proportional to 42,491.25, 63,736.89 and 20,237.16 is: 30,355.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,491.25 : 63,736.89 = 20,237.16 : x
  2. Step 2: Convert to fraction form
    42,491.25/63,736.89 = 20,237.16/x
  3. Step 3: Cross multiply
    42,491.25x = 63,736.89 × 20,237.16
  4. Step 4: Simplify right side
    42,491.25x = 1,289,853,640.83
  5. Step 5: Solve for x
    x = 1,289,853,640.83/42,491.25
  6. Step 6: Final answer
    x = 30,355.75

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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.