Home / 77,961.31-116,378.02-68,502.82

Finding the Fourth Proportional to 77,961.31, 116,378.02 and 68,502.82

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Solution

The fourth proportional to 77,961.31, 116,378.02 and 68,502.82 is: 102,258.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,961.31 : 116,378.02 = 68,502.82 : x
  2. Step 2: Convert to fraction form
    77,961.31/116,378.02 = 68,502.82/x
  3. Step 3: Cross multiply
    77,961.31x = 116,378.02 × 68,502.82
  4. Step 4: Simplify right side
    77,961.31x = 7,972,222,265.41
  5. Step 5: Solve for x
    x = 7,972,222,265.41/77,961.31
  6. Step 6: Final answer
    x = 102,258.70

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.