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Finding the Fourth Proportional to 68,929.16, 103,320.23 and 39,283.16

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Solution

The fourth proportional to 68,929.16, 103,320.23 and 39,283.16 is: 58,882.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,929.16 : 103,320.23 = 39,283.16 : x
  2. Step 2: Convert to fraction form
    68,929.16/103,320.23 = 39,283.16/x
  3. Step 3: Cross multiply
    68,929.16x = 103,320.23 × 39,283.16
  4. Step 4: Simplify right side
    68,929.16x = 4,058,745,325.94
  5. Step 5: Solve for x
    x = 4,058,745,325.94/68,929.16
  6. Step 6: Final answer
    x = 58,882.85

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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.