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Finding the Fourth Proportional to 68,802.36, 103,209 and 29,359.80

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Solution

The fourth proportional to 68,802.36, 103,209 and 29,359.80 is: 44,042.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,802.36 : 103,209 = 29,359.80 : x
  2. Step 2: Convert to fraction form
    68,802.36/103,209 = 29,359.80/x
  3. Step 3: Cross multiply
    68,802.36x = 103,209 × 29,359.80
  4. Step 4: Simplify right side
    68,802.36x = 3,030,195,598.20
  5. Step 5: Solve for x
    x = 3,030,195,598.20/68,802.36
  6. Step 6: Final answer
    x = 44,042.03

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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.