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Finding the Fourth Proportional to 68,856.96, 103,259.52 and 54,238.08

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Solution

The fourth proportional to 68,856.96, 103,259.52 and 54,238.08 is: 81,336.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,856.96 : 103,259.52 = 54,238.08 : x
  2. Step 2: Convert to fraction form
    68,856.96/103,259.52 = 54,238.08/x
  3. Step 3: Cross multiply
    68,856.96x = 103,259.52 × 54,238.08
  4. Step 4: Simplify right side
    68,856.96x = 5,600,598,106.52
  5. Step 5: Solve for x
    x = 5,600,598,106.52/68,856.96
  6. Step 6: Final answer
    x = 81,336.70

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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.