Home / 85,127.64-117,436.63-54,922.66

Finding the Fourth Proportional to 85,127.64, 117,436.63 and 54,922.66

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Solution

The fourth proportional to 85,127.64, 117,436.63 and 54,922.66 is: 75,767.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,127.64 : 117,436.63 = 54,922.66 : x
  2. Step 2: Convert to fraction form
    85,127.64/117,436.63 = 54,922.66/x
  3. Step 3: Cross multiply
    85,127.64x = 117,436.63 × 54,922.66
  4. Step 4: Simplify right side
    85,127.64x = 6,449,932,101.04
  5. Step 5: Solve for x
    x = 6,449,932,101.04/85,127.64
  6. Step 6: Final answer
    x = 75,767.78

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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.