Home / 81,683.58-112,725.87-45,874.36

Finding the Fourth Proportional to 81,683.58, 112,725.87 and 45,874.36

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Solution

The fourth proportional to 81,683.58, 112,725.87 and 45,874.36 is: 63,308.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,683.58 : 112,725.87 = 45,874.36 : x
  2. Step 2: Convert to fraction form
    81,683.58/112,725.87 = 45,874.36/x
  3. Step 3: Cross multiply
    81,683.58x = 112,725.87 × 45,874.36
  4. Step 4: Simplify right side
    81,683.58x = 5,171,227,141.69
  5. Step 5: Solve for x
    x = 5,171,227,141.69/81,683.58
  6. Step 6: Final answer
    x = 63,308.04

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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.