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Finding the Fourth Proportional to 87,992.92, 121,428.96 and 47,705.92

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Solution

The fourth proportional to 87,992.92, 121,428.96 and 47,705.92 is: 65,833.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,992.92 : 121,428.96 = 47,705.92 : x
  2. Step 2: Convert to fraction form
    87,992.92/121,428.96 = 47,705.92/x
  3. Step 3: Cross multiply
    87,992.92x = 121,428.96 × 47,705.92
  4. Step 4: Simplify right side
    87,992.92x = 5,792,880,251.44
  5. Step 5: Solve for x
    x = 5,792,880,251.44/87,992.92
  6. Step 6: Final answer
    x = 65,833.48

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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.