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Finding the Fourth Proportional to 83,370.68, 115,054.44 and 45,645.20

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Solution

The fourth proportional to 83,370.68, 115,054.44 and 45,645.20 is: 62,991.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,370.68 : 115,054.44 = 45,645.20 : x
  2. Step 2: Convert to fraction form
    83,370.68/115,054.44 = 45,645.20/x
  3. Step 3: Cross multiply
    83,370.68x = 115,054.44 × 45,645.20
  4. Step 4: Simplify right side
    83,370.68x = 5,251,682,924.69
  5. Step 5: Solve for x
    x = 5,251,682,924.69/83,370.68
  6. Step 6: Final answer
    x = 62,991.96

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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.