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Finding the Fourth Proportional to 75,987, 104,859.22 and 43,726.60

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Solution

The fourth proportional to 75,987, 104,859.22 and 43,726.60 is: 60,341.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,987 : 104,859.22 = 43,726.60 : x
  2. Step 2: Convert to fraction form
    75,987/104,859.22 = 43,726.60/x
  3. Step 3: Cross multiply
    75,987x = 104,859.22 × 43,726.60
  4. Step 4: Simplify right side
    75,987x = 4,585,137,169.25
  5. Step 5: Solve for x
    x = 4,585,137,169.25/75,987
  6. Step 6: Final answer
    x = 60,341.07

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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.