Home / 45,357.52-68,012.85-20,376.21

Finding the Fourth Proportional to 45,357.52, 68,012.85 and 20,376.21

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Solution

The fourth proportional to 45,357.52, 68,012.85 and 20,376.21 is: 30,553.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,357.52 : 68,012.85 = 20,376.21 : x
  2. Step 2: Convert to fraction form
    45,357.52/68,012.85 = 20,376.21/x
  3. Step 3: Cross multiply
    45,357.52x = 68,012.85 × 20,376.21
  4. Step 4: Simplify right side
    45,357.52x = 1,385,844,114.30
  5. Step 5: Solve for x
    x = 1,385,844,114.30/45,357.52
  6. Step 6: Final answer
    x = 30,553.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.