Home / 81,619.38-112,635.36-53,325

Finding the Fourth Proportional to 81,619.38, 112,635.36 and 53,325

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Solution

The fourth proportional to 81,619.38, 112,635.36 and 53,325 is: 73,588.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,619.38 : 112,635.36 = 53,325 : x
  2. Step 2: Convert to fraction form
    81,619.38/112,635.36 = 53,325/x
  3. Step 3: Cross multiply
    81,619.38x = 112,635.36 × 53,325
  4. Step 4: Simplify right side
    81,619.38x = 6,006,280,572
  5. Step 5: Solve for x
    x = 6,006,280,572/81,619.38
  6. Step 6: Final answer
    x = 73,588.90

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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.