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Finding the Fourth Proportional to 68,510.09, 102,695.09 and 38,865.30

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Solution

The fourth proportional to 68,510.09, 102,695.09 and 38,865.30 is: 58,258.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,510.09 : 102,695.09 = 38,865.30 : x
  2. Step 2: Convert to fraction form
    68,510.09/102,695.09 = 38,865.30/x
  3. Step 3: Cross multiply
    68,510.09x = 102,695.09 × 38,865.30
  4. Step 4: Simplify right side
    68,510.09x = 3,991,275,287.05
  5. Step 5: Solve for x
    x = 3,991,275,287.05/68,510.09
  6. Step 6: Final answer
    x = 58,258.22

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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.