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Finding the Fourth Proportional to 81,367.82, 112,291.81 and 45,555.69

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Solution

The fourth proportional to 81,367.82, 112,291.81 and 45,555.69 is: 62,869.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,367.82 : 112,291.81 = 45,555.69 : x
  2. Step 2: Convert to fraction form
    81,367.82/112,291.81 = 45,555.69/x
  3. Step 3: Cross multiply
    81,367.82x = 112,291.81 × 45,555.69
  4. Step 4: Simplify right side
    81,367.82x = 5,115,530,772.01
  5. Step 5: Solve for x
    x = 5,115,530,772.01/81,367.82
  6. Step 6: Final answer
    x = 62,869.22

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1.5x scale

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.