Home / 77,921.19-116,896.37-31,177.71

Finding the Fourth Proportional to 77,921.19, 116,896.37 and 31,177.71

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Solution

The fourth proportional to 77,921.19, 116,896.37 and 31,177.71 is: 46,772.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,921.19 : 116,896.37 = 31,177.71 : x
  2. Step 2: Convert to fraction form
    77,921.19/116,896.37 = 31,177.71/x
  3. Step 3: Cross multiply
    77,921.19x = 116,896.37 × 31,177.71
  4. Step 4: Simplify right side
    77,921.19x = 3,644,560,968.02
  5. Step 5: Solve for x
    x = 3,644,560,968.02/77,921.19
  6. Step 6: Final answer
    x = 46,772.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.