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Finding the Fourth Proportional to 86,067.88, 118,677.78 and 55,813.48

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Solution

The fourth proportional to 86,067.88, 118,677.78 and 55,813.48 is: 76,960.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,067.88 : 118,677.78 = 55,813.48 : x
  2. Step 2: Convert to fraction form
    86,067.88/118,677.78 = 55,813.48/x
  3. Step 3: Cross multiply
    86,067.88x = 118,677.78 × 55,813.48
  4. Step 4: Simplify right side
    86,067.88x = 6,623,819,900.47
  5. Step 5: Solve for x
    x = 6,623,819,900.47/86,067.88
  6. Step 6: Final answer
    x = 76,960.42

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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.