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Finding the Fourth Proportional to 68,802.51, 103,203.86 and 18,883.29

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Solution

The fourth proportional to 68,802.51, 103,203.86 and 18,883.29 is: 28,324.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,802.51 : 103,203.86 = 18,883.29 : x
  2. Step 2: Convert to fraction form
    68,802.51/103,203.86 = 18,883.29/x
  3. Step 3: Cross multiply
    68,802.51x = 103,203.86 × 18,883.29
  4. Step 4: Simplify right side
    68,802.51x = 1,948,828,323.08
  5. Step 5: Solve for x
    x = 1,948,828,323.08/68,802.51
  6. Step 6: Final answer
    x = 28,324.96

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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.