Home / 30,679.38-45,763.53-30,171.35

Finding the Fourth Proportional to 30,679.38, 45,763.53 and 30,171.35

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Solution

The fourth proportional to 30,679.38, 45,763.53 and 30,171.35 is: 45,005.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,679.38 : 45,763.53 = 30,171.35 : x
  2. Step 2: Convert to fraction form
    30,679.38/45,763.53 = 30,171.35/x
  3. Step 3: Cross multiply
    30,679.38x = 45,763.53 × 30,171.35
  4. Step 4: Simplify right side
    30,679.38x = 1,380,747,252.05
  5. Step 5: Solve for x
    x = 1,380,747,252.05/30,679.38
  6. Step 6: Final answer
    x = 45,005.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.