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Finding the Fourth Proportional to 68,379.72, 102,569.58 and 54,616.20

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Solution

The fourth proportional to 68,379.72, 102,569.58 and 54,616.20 is: 81,924.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,379.72 : 102,569.58 = 54,616.20 : x
  2. Step 2: Convert to fraction form
    68,379.72/102,569.58 = 54,616.20/x
  3. Step 3: Cross multiply
    68,379.72x = 102,569.58 × 54,616.20
  4. Step 4: Simplify right side
    68,379.72x = 5,601,960,695.20
  5. Step 5: Solve for x
    x = 5,601,960,695.20/68,379.72
  6. Step 6: Final answer
    x = 81,924.30

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1.5x scale

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.