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Finding the Fourth Proportional to 60,644.70, 90,971.10 and 20,663.10

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Solution

The fourth proportional to 60,644.70, 90,971.10 and 20,663.10 is: 30,996.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,644.70 : 90,971.10 = 20,663.10 : x
  2. Step 2: Convert to fraction form
    60,644.70/90,971.10 = 20,663.10/x
  3. Step 3: Cross multiply
    60,644.70x = 90,971.10 × 20,663.10
  4. Step 4: Simplify right side
    60,644.70x = 1,879,744,936.41
  5. Step 5: Solve for x
    x = 1,879,744,936.41/60,644.70
  6. Step 6: Final answer
    x = 30,996.03

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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.