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Finding the Fourth Proportional to 68,000.75, 102,004.77 and 21,257.27

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Solution

The fourth proportional to 68,000.75, 102,004.77 and 21,257.27 is: 31,887.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,000.75 : 102,004.77 = 21,257.27 : x
  2. Step 2: Convert to fraction form
    68,000.75/102,004.77 = 21,257.27/x
  3. Step 3: Cross multiply
    68,000.75x = 102,004.77 × 21,257.27
  4. Step 4: Simplify right side
    68,000.75x = 2,168,342,937.18
  5. Step 5: Solve for x
    x = 2,168,342,937.18/68,000.75
  6. Step 6: Final answer
    x = 31,887.04

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1.5x scale

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.