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Finding the Fourth Proportional to 67,562, 101,356.44 and 20,812.88

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Solution

The fourth proportional to 67,562, 101,356.44 and 20,812.88 is: 31,223.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,562 : 101,356.44 = 20,812.88 : x
  2. Step 2: Convert to fraction form
    67,562/101,356.44 = 20,812.88/x
  3. Step 3: Cross multiply
    67,562x = 101,356.44 × 20,812.88
  4. Step 4: Simplify right side
    67,562x = 2,109,519,422.95
  5. Step 5: Solve for x
    x = 2,109,519,422.95/67,562
  6. Step 6: Final answer
    x = 31,223.46

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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.