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Finding the Fourth Proportional to 68,542.50, 102,828.90 and 29,133.30

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Solution

The fourth proportional to 68,542.50, 102,828.90 and 29,133.30 is: 43,706.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,542.50 : 102,828.90 = 29,133.30 : x
  2. Step 2: Convert to fraction form
    68,542.50/102,828.90 = 29,133.30/x
  3. Step 3: Cross multiply
    68,542.50x = 102,828.90 × 29,133.30
  4. Step 4: Simplify right side
    68,542.50x = 2,995,745,192.37
  5. Step 5: Solve for x
    x = 2,995,745,192.37/68,542.50
  6. Step 6: Final answer
    x = 43,706.39

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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.