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Finding the Fourth Proportional to 67,407.90, 101,127.42 and 20,021.96

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Solution

The fourth proportional to 67,407.90, 101,127.42 and 20,021.96 is: 30,037.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,407.90 : 101,127.42 = 20,021.96 : x
  2. Step 2: Convert to fraction form
    67,407.90/101,127.42 = 20,021.96/x
  3. Step 3: Cross multiply
    67,407.90x = 101,127.42 × 20,021.96
  4. Step 4: Simplify right side
    67,407.90x = 2,024,768,652.51
  5. Step 5: Solve for x
    x = 2,024,768,652.51/67,407.90
  6. Step 6: Final answer
    x = 30,037.56

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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.