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Finding the Fourth Proportional to 40,424.21, 55,787.09 and 22,519.21

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Solution

The fourth proportional to 40,424.21, 55,787.09 and 22,519.21 is: 31,077.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,424.21 : 55,787.09 = 22,519.21 : x
  2. Step 2: Convert to fraction form
    40,424.21/55,787.09 = 22,519.21/x
  3. Step 3: Cross multiply
    40,424.21x = 55,787.09 × 22,519.21
  4. Step 4: Simplify right side
    40,424.21x = 1,256,281,195.00
  5. Step 5: Solve for x
    x = 1,256,281,195.00/40,424.21
  6. Step 6: Final answer
    x = 31,077.45

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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.