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Finding the Fourth Proportional to 37,636, 51,939.36 and 20,868.96

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Solution

The fourth proportional to 37,636, 51,939.36 and 20,868.96 is: 28,800.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,636 : 51,939.36 = 20,868.96 : x
  2. Step 2: Convert to fraction form
    37,636/51,939.36 = 20,868.96/x
  3. Step 3: Cross multiply
    37,636x = 51,939.36 × 20,868.96
  4. Step 4: Simplify right side
    37,636x = 1,083,920,426.27
  5. Step 5: Solve for x
    x = 1,083,920,426.27/37,636
  6. Step 6: Final answer
    x = 28,800.10

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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.