Home / 84,837.80-117,079.76-47,112

Finding the Fourth Proportional to 84,837.80, 117,079.76 and 47,112

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Solution

The fourth proportional to 84,837.80, 117,079.76 and 47,112 is: 65,016.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,837.80 : 117,079.76 = 47,112 : x
  2. Step 2: Convert to fraction form
    84,837.80/117,079.76 = 47,112/x
  3. Step 3: Cross multiply
    84,837.80x = 117,079.76 × 47,112
  4. Step 4: Simplify right side
    84,837.80x = 5,515,861,653.12
  5. Step 5: Solve for x
    x = 5,515,861,653.12/84,837.80
  6. Step 6: Final answer
    x = 65,016.56

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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.