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Finding the Fourth Proportional to 68,509.81, 94,542.82 and 40,210.03

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Solution

The fourth proportional to 68,509.81, 94,542.82 and 40,210.03 is: 55,489.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,509.81 : 94,542.82 = 40,210.03 : x
  2. Step 2: Convert to fraction form
    68,509.81/94,542.82 = 40,210.03/x
  3. Step 3: Cross multiply
    68,509.81x = 94,542.82 × 40,210.03
  4. Step 4: Simplify right side
    68,509.81x = 3,801,569,628.48
  5. Step 5: Solve for x
    x = 3,801,569,628.48/68,509.81
  6. Step 6: Final answer
    x = 55,489.42

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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.