Home / 81,497.36-122,272.67-39,382.29

Finding the Fourth Proportional to 81,497.36, 122,272.67 and 39,382.29

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Solution

The fourth proportional to 81,497.36, 122,272.67 and 39,382.29 is: 59,086.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,497.36 : 122,272.67 = 39,382.29 : x
  2. Step 2: Convert to fraction form
    81,497.36/122,272.67 = 39,382.29/x
  3. Step 3: Cross multiply
    81,497.36x = 122,272.67 × 39,382.29
  4. Step 4: Simplify right side
    81,497.36x = 4,815,377,847.47
  5. Step 5: Solve for x
    x = 4,815,377,847.47/81,497.36
  6. Step 6: Final answer
    x = 59,086.30

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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.