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Finding the Fourth Proportional to 88,360.65, 122,011.26 and 81,949.90

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Solution

The fourth proportional to 88,360.65, 122,011.26 and 81,949.90 is: 113,159.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,360.65 : 122,011.26 = 81,949.90 : x
  2. Step 2: Convert to fraction form
    88,360.65/122,011.26 = 81,949.90/x
  3. Step 3: Cross multiply
    88,360.65x = 122,011.26 × 81,949.90
  4. Step 4: Simplify right side
    88,360.65x = 9,998,810,555.87
  5. Step 5: Solve for x
    x = 9,998,810,555.87/88,360.65
  6. Step 6: Final answer
    x = 113,159.09

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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.