Home / 39,688.72-54,761.88-22,912

Finding the Fourth Proportional to 39,688.72, 54,761.88 and 22,912

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Solution

The fourth proportional to 39,688.72, 54,761.88 and 22,912 is: 31,613.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,688.72 : 54,761.88 = 22,912 : x
  2. Step 2: Convert to fraction form
    39,688.72/54,761.88 = 22,912/x
  3. Step 3: Cross multiply
    39,688.72x = 54,761.88 × 22,912
  4. Step 4: Simplify right side
    39,688.72x = 1,254,704,194.56
  5. Step 5: Solve for x
    x = 1,254,704,194.56/39,688.72
  6. Step 6: Final answer
    x = 31,613.62

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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.