Home / 81,795.46-122,643.62-53,353.66

Finding the Fourth Proportional to 81,795.46, 122,643.62 and 53,353.66

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Solution

The fourth proportional to 81,795.46, 122,643.62 and 53,353.66 is: 79,998.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,795.46 : 122,643.62 = 53,353.66 : x
  2. Step 2: Convert to fraction form
    81,795.46/122,643.62 = 53,353.66/x
  3. Step 3: Cross multiply
    81,795.46x = 122,643.62 × 53,353.66
  4. Step 4: Simplify right side
    81,795.46x = 6,543,486,002.65
  5. Step 5: Solve for x
    x = 6,543,486,002.65/81,795.46
  6. Step 6: Final answer
    x = 79,998.16

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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.