Home / 39,912.57-55,052.10-29,138.58

Finding the Fourth Proportional to 39,912.57, 55,052.10 and 29,138.58

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Solution

The fourth proportional to 39,912.57, 55,052.10 and 29,138.58 is: 40,191.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,912.57 : 55,052.10 = 29,138.58 : x
  2. Step 2: Convert to fraction form
    39,912.57/55,052.10 = 29,138.58/x
  3. Step 3: Cross multiply
    39,912.57x = 55,052.10 × 29,138.58
  4. Step 4: Simplify right side
    39,912.57x = 1,604,140,020.02
  5. Step 5: Solve for x
    x = 1,604,140,020.02/39,912.57
  6. Step 6: Final answer
    x = 40,191.35

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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.