Home / 81,725.73-112,784.41-45,915.02

Finding the Fourth Proportional to 81,725.73, 112,784.41 and 45,915.02

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Solution

The fourth proportional to 81,725.73, 112,784.41 and 45,915.02 is: 63,364.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,725.73 : 112,784.41 = 45,915.02 : x
  2. Step 2: Convert to fraction form
    81,725.73/112,784.41 = 45,915.02/x
  3. Step 3: Cross multiply
    81,725.73x = 112,784.41 × 45,915.02
  4. Step 4: Simplify right side
    81,725.73x = 5,178,498,440.84
  5. Step 5: Solve for x
    x = 5,178,498,440.84/81,725.73
  6. Step 6: Final answer
    x = 63,364.36

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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.