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Finding the Fourth Proportional to 81,914.67, 122,870.79 and 26,510.67

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Solution

The fourth proportional to 81,914.67, 122,870.79 and 26,510.67 is: 39,765.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,914.67 : 122,870.79 = 26,510.67 : x
  2. Step 2: Convert to fraction form
    81,914.67/122,870.79 = 26,510.67/x
  3. Step 3: Cross multiply
    81,914.67x = 122,870.79 × 26,510.67
  4. Step 4: Simplify right side
    81,914.67x = 3,257,386,966.33
  5. Step 5: Solve for x
    x = 3,257,386,966.33/81,914.67
  6. Step 6: Final answer
    x = 39,765.61

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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.