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Finding the Fourth Proportional to 67,406.40, 101,125.17 and 20,020.46

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Solution

The fourth proportional to 67,406.40, 101,125.17 and 20,020.46 is: 30,035.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,406.40 : 101,125.17 = 20,020.46 : x
  2. Step 2: Convert to fraction form
    67,406.40/101,125.17 = 20,020.46/x
  3. Step 3: Cross multiply
    67,406.40x = 101,125.17 × 20,020.46
  4. Step 4: Simplify right side
    67,406.40x = 2,024,571,915.35
  5. Step 5: Solve for x
    x = 2,024,571,915.35/67,406.40
  6. Step 6: Final answer
    x = 30,035.31

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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.