Home / 40,120.64-55,384.92-28,644.56

Finding the Fourth Proportional to 40,120.64, 55,384.92 and 28,644.56

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Solution

The fourth proportional to 40,120.64, 55,384.92 and 28,644.56 is: 39,542.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,120.64 : 55,384.92 = 28,644.56 : x
  2. Step 2: Convert to fraction form
    40,120.64/55,384.92 = 28,644.56/x
  3. Step 3: Cross multiply
    40,120.64x = 55,384.92 × 28,644.56
  4. Step 4: Simplify right side
    40,120.64x = 1,586,476,664.04
  5. Step 5: Solve for x
    x = 1,586,476,664.04/40,120.64
  6. Step 6: Final answer
    x = 39,542.66

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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.