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Finding the Fourth Proportional to 81,847.72, 112,951.02 and 48,313.72

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Solution

The fourth proportional to 81,847.72, 112,951.02 and 48,313.72 is: 66,673.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,847.72 : 112,951.02 = 48,313.72 : x
  2. Step 2: Convert to fraction form
    81,847.72/112,951.02 = 48,313.72/x
  3. Step 3: Cross multiply
    81,847.72x = 112,951.02 × 48,313.72
  4. Step 4: Simplify right side
    81,847.72x = 5,457,083,953.99
  5. Step 5: Solve for x
    x = 5,457,083,953.99/81,847.72
  6. Step 6: Final answer
    x = 66,673.62

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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.