Home / 45,357.75-68,013.30-20,376.38

Finding the Fourth Proportional to 45,357.75, 68,013.30 and 20,376.38

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Solution

The fourth proportional to 45,357.75, 68,013.30 and 20,376.38 is: 30,554.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,357.75 : 68,013.30 = 20,376.38 : x
  2. Step 2: Convert to fraction form
    45,357.75/68,013.30 = 20,376.38/x
  3. Step 3: Cross multiply
    45,357.75x = 68,013.30 × 20,376.38
  4. Step 4: Simplify right side
    45,357.75x = 1,385,864,505.79
  5. Step 5: Solve for x
    x = 1,385,864,505.79/45,357.75
  6. Step 6: Final answer
    x = 30,554.08

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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.