Home / 45,721.75-68,520.35-25,740.78

Finding the Fourth Proportional to 45,721.75, 68,520.35 and 25,740.78

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Solution

The fourth proportional to 45,721.75, 68,520.35 and 25,740.78 is: 38,576.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,721.75 : 68,520.35 = 25,740.78 : x
  2. Step 2: Convert to fraction form
    45,721.75/68,520.35 = 25,740.78/x
  3. Step 3: Cross multiply
    45,721.75x = 68,520.35 × 25,740.78
  4. Step 4: Simplify right side
    45,721.75x = 1,763,767,254.87
  5. Step 5: Solve for x
    x = 1,763,767,254.87/45,721.75
  6. Step 6: Final answer
    x = 38,576.11

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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.