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Finding the Fourth Proportional to 66,737.85, 100,077.26 and 19,982.01

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Solution

The fourth proportional to 66,737.85, 100,077.26 and 19,982.01 is: 29,964.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,737.85 : 100,077.26 = 19,982.01 : x
  2. Step 2: Convert to fraction form
    66,737.85/100,077.26 = 19,982.01/x
  3. Step 3: Cross multiply
    66,737.85x = 100,077.26 × 19,982.01
  4. Step 4: Simplify right side
    66,737.85x = 1,999,744,710.18
  5. Step 5: Solve for x
    x = 1,999,744,710.18/66,737.85
  6. Step 6: Final answer
    x = 29,964.18

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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.