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Finding the Fourth Proportional to 37,012.71, 51,078.75 and 20,245.71

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Solution

The fourth proportional to 37,012.71, 51,078.75 and 20,245.71 is: 27,939.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,012.71 : 51,078.75 = 20,245.71 : x
  2. Step 2: Convert to fraction form
    37,012.71/51,078.75 = 20,245.71/x
  3. Step 3: Cross multiply
    37,012.71x = 51,078.75 × 20,245.71
  4. Step 4: Simplify right side
    37,012.71x = 1,034,125,559.66
  5. Step 5: Solve for x
    x = 1,034,125,559.66/37,012.71
  6. Step 6: Final answer
    x = 27,939.74

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1.5x scale

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.