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Finding the Fourth Proportional to 68,550.40, 94,600.20 and 39,871.54

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Solution

The fourth proportional to 68,550.40, 94,600.20 and 39,871.54 is: 55,023.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,550.40 : 94,600.20 = 39,871.54 : x
  2. Step 2: Convert to fraction form
    68,550.40/94,600.20 = 39,871.54/x
  3. Step 3: Cross multiply
    68,550.40x = 94,600.20 × 39,871.54
  4. Step 4: Simplify right side
    68,550.40x = 3,771,855,658.31
  5. Step 5: Solve for x
    x = 3,771,855,658.31/68,550.40
  6. Step 6: Final answer
    x = 55,023.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.