Home / 81,792.45-122,639.13-53,350.65

Finding the Fourth Proportional to 81,792.45, 122,639.13 and 53,350.65

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Solution

The fourth proportional to 81,792.45, 122,639.13 and 53,350.65 is: 79,993.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,792.45 : 122,639.13 = 53,350.65 : x
  2. Step 2: Convert to fraction form
    81,792.45/122,639.13 = 53,350.65/x
  3. Step 3: Cross multiply
    81,792.45x = 122,639.13 × 53,350.65
  4. Step 4: Simplify right side
    81,792.45x = 6,542,877,300.93
  5. Step 5: Solve for x
    x = 6,542,877,300.93/81,792.45
  6. Step 6: Final answer
    x = 79,993.66

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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.