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Finding the Fourth Proportional to 81,868.59, 122,807.21 and 26,468.91

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Solution

The fourth proportional to 81,868.59, 122,807.21 and 26,468.91 is: 39,704.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,868.59 : 122,807.21 = 26,468.91 : x
  2. Step 2: Convert to fraction form
    81,868.59/122,807.21 = 26,468.91/x
  3. Step 3: Cross multiply
    81,868.59x = 122,807.21 × 26,468.91
  4. Step 4: Simplify right side
    81,868.59x = 3,250,572,856.50
  5. Step 5: Solve for x
    x = 3,250,572,856.50/81,868.59
  6. Step 6: Final answer
    x = 39,704.76

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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.