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Finding the Fourth Proportional to 37,420, 51,640.32 and 20,652.64

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Solution

The fourth proportional to 37,420, 51,640.32 and 20,652.64 is: 28,501.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,420 : 51,640.32 = 20,652.64 : x
  2. Step 2: Convert to fraction form
    37,420/51,640.32 = 20,652.64/x
  3. Step 3: Cross multiply
    37,420x = 51,640.32 × 20,652.64
  4. Step 4: Simplify right side
    37,420x = 1,066,508,938.44
  5. Step 5: Solve for x
    x = 1,066,508,938.44/37,420
  6. Step 6: Final answer
    x = 28,501.04

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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.