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Finding the Fourth Proportional to 70,001, 105,006.76 and 20,080.70

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Solution

The fourth proportional to 70,001, 105,006.76 and 20,080.70 is: 30,122.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,001 : 105,006.76 = 20,080.70 : x
  2. Step 2: Convert to fraction form
    70,001/105,006.76 = 20,080.70/x
  3. Step 3: Cross multiply
    70,001x = 105,006.76 × 20,080.70
  4. Step 4: Simplify right side
    70,001x = 2,108,609,245.53
  5. Step 5: Solve for x
    x = 2,108,609,245.53/70,001
  6. Step 6: Final answer
    x = 30,122.56

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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.