Home / 81,844.64-122,717.56-31,915.16

Finding the Fourth Proportional to 81,844.64, 122,717.56 and 31,915.16

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Solution

The fourth proportional to 81,844.64, 122,717.56 and 31,915.16 is: 47,853.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,844.64 : 122,717.56 = 31,915.16 : x
  2. Step 2: Convert to fraction form
    81,844.64/122,717.56 = 31,915.16/x
  3. Step 3: Cross multiply
    81,844.64x = 122,717.56 × 31,915.16
  4. Step 4: Simplify right side
    81,844.64x = 3,916,550,562.21
  5. Step 5: Solve for x
    x = 3,916,550,562.21/81,844.64
  6. Step 6: Final answer
    x = 47,853.48

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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.