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Finding the Fourth Proportional to 68,952.78, 103,435.16 and 19,032.89

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Solution

The fourth proportional to 68,952.78, 103,435.16 and 19,032.89 is: 28,550.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,952.78 : 103,435.16 = 19,032.89 : x
  2. Step 2: Convert to fraction form
    68,952.78/103,435.16 = 19,032.89/x
  3. Step 3: Cross multiply
    68,952.78x = 103,435.16 × 19,032.89
  4. Step 4: Simplify right side
    68,952.78x = 1,968,669,410.07
  5. Step 5: Solve for x
    x = 1,968,669,410.07/68,952.78
  6. Step 6: Final answer
    x = 28,550.98

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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.