Home / 57,206.82-78,946.21-31,367.80

Finding the Fourth Proportional to 57,206.82, 78,946.21 and 31,367.80

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Solution

The fourth proportional to 57,206.82, 78,946.21 and 31,367.80 is: 43,287.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,206.82 : 78,946.21 = 31,367.80 : x
  2. Step 2: Convert to fraction form
    57,206.82/78,946.21 = 31,367.80/x
  3. Step 3: Cross multiply
    57,206.82x = 78,946.21 × 31,367.80
  4. Step 4: Simplify right side
    57,206.82x = 2,476,368,619.86
  5. Step 5: Solve for x
    x = 2,476,368,619.86/57,206.82
  6. Step 6: Final answer
    x = 43,287.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.