Home / 81,997.28-113,117.58-47,984.72

Finding the Fourth Proportional to 81,997.28, 113,117.58 and 47,984.72

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Solution

The fourth proportional to 81,997.28, 113,117.58 and 47,984.72 is: 66,196.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,997.28 : 113,117.58 = 47,984.72 : x
  2. Step 2: Convert to fraction form
    81,997.28/113,117.58 = 47,984.72/x
  3. Step 3: Cross multiply
    81,997.28x = 113,117.58 × 47,984.72
  4. Step 4: Simplify right side
    81,997.28x = 5,427,915,403.38
  5. Step 5: Solve for x
    x = 5,427,915,403.38/81,997.28
  6. Step 6: Final answer
    x = 66,196.29

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Double scale
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1.5x scale

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.