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Finding the Fourth Proportional to 67,030.88, 100,551 and 20,287.28

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Solution

The fourth proportional to 67,030.88, 100,551 and 20,287.28 is: 30,432.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,030.88 : 100,551 = 20,287.28 : x
  2. Step 2: Convert to fraction form
    67,030.88/100,551 = 20,287.28/x
  3. Step 3: Cross multiply
    67,030.88x = 100,551 × 20,287.28
  4. Step 4: Simplify right side
    67,030.88x = 2,039,906,291.28
  5. Step 5: Solve for x
    x = 2,039,906,291.28/67,030.88
  6. Step 6: Final answer
    x = 30,432.34

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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.