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Finding the Fourth Proportional to 68,472.29, 94,518.09 and 61,289.51

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Solution

The fourth proportional to 68,472.29, 94,518.09 and 61,289.51 is: 84,603.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,472.29 : 94,518.09 = 61,289.51 : x
  2. Step 2: Convert to fraction form
    68,472.29/94,518.09 = 61,289.51/x
  3. Step 3: Cross multiply
    68,472.29x = 94,518.09 × 61,289.51
  4. Step 4: Simplify right side
    68,472.29x = 5,792,967,481.31
  5. Step 5: Solve for x
    x = 5,792,967,481.31/68,472.29
  6. Step 6: Final answer
    x = 84,603.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.