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Finding the Fourth Proportional to 57,680.70, 86,521.05 and 36,048.30

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Solution

The fourth proportional to 57,680.70, 86,521.05 and 36,048.30 is: 54,072.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,680.70 : 86,521.05 = 36,048.30 : x
  2. Step 2: Convert to fraction form
    57,680.70/86,521.05 = 36,048.30/x
  3. Step 3: Cross multiply
    57,680.70x = 86,521.05 × 36,048.30
  4. Step 4: Simplify right side
    57,680.70x = 3,118,936,766.72
  5. Step 5: Solve for x
    x = 3,118,936,766.72/57,680.70
  6. Step 6: Final answer
    x = 54,072.45

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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.