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Finding the Fourth Proportional to 32,703.44, 45,131.72 and 20,135.44

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Solution

The fourth proportional to 32,703.44, 45,131.72 and 20,135.44 is: 27,787.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,703.44 : 45,131.72 = 20,135.44 : x
  2. Step 2: Convert to fraction form
    32,703.44/45,131.72 = 20,135.44/x
  3. Step 3: Cross multiply
    32,703.44x = 45,131.72 × 20,135.44
  4. Step 4: Simplify right side
    32,703.44x = 908,747,040.16
  5. Step 5: Solve for x
    x = 908,747,040.16/32,703.44
  6. Step 6: Final answer
    x = 27,787.51

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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.