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Finding the Fourth Proportional to 70,006.53, 104,999.94 and 20,090.91

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Solution

The fourth proportional to 70,006.53, 104,999.94 and 20,090.91 is: 30,133.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,006.53 : 104,999.94 = 20,090.91 : x
  2. Step 2: Convert to fraction form
    70,006.53/104,999.94 = 20,090.91/x
  3. Step 3: Cross multiply
    70,006.53x = 104,999.94 × 20,090.91
  4. Step 4: Simplify right side
    70,006.53x = 2,109,544,344.55
  5. Step 5: Solve for x
    x = 2,109,544,344.55/70,006.53
  6. Step 6: Final answer
    x = 30,133.54

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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.