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Finding the Fourth Proportional to 68,894.48, 103,342.28 and 18,977.33

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Solution

The fourth proportional to 68,894.48, 103,342.28 and 18,977.33 is: 28,466.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,894.48 : 103,342.28 = 18,977.33 : x
  2. Step 2: Convert to fraction form
    68,894.48/103,342.28 = 18,977.33/x
  3. Step 3: Cross multiply
    68,894.48x = 103,342.28 × 18,977.33
  4. Step 4: Simplify right side
    68,894.48x = 1,961,160,550.51
  5. Step 5: Solve for x
    x = 1,961,160,550.51/68,894.48
  6. Step 6: Final answer
    x = 28,466.15

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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.