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Finding the Fourth Proportional to 35,993.80, 49,671.40 and 20,078.25

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Solution

The fourth proportional to 35,993.80, 49,671.40 and 20,078.25 is: 27,707.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,993.80 : 49,671.40 = 20,078.25 : x
  2. Step 2: Convert to fraction form
    35,993.80/49,671.40 = 20,078.25/x
  3. Step 3: Cross multiply
    35,993.80x = 49,671.40 × 20,078.25
  4. Step 4: Simplify right side
    35,993.80x = 997,314,787.05
  5. Step 5: Solve for x
    x = 997,314,787.05/35,993.80
  6. Step 6: Final answer
    x = 27,707.96

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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.