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Finding the Fourth Proportional to 87,893.55, 121,300.56 and 49,660.11

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Solution

The fourth proportional to 87,893.55, 121,300.56 and 49,660.11 is: 68,535.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,893.55 : 121,300.56 = 49,660.11 : x
  2. Step 2: Convert to fraction form
    87,893.55/121,300.56 = 49,660.11/x
  3. Step 3: Cross multiply
    87,893.55x = 121,300.56 × 49,660.11
  4. Step 4: Simplify right side
    87,893.55x = 6,023,799,152.66
  5. Step 5: Solve for x
    x = 6,023,799,152.66/87,893.55
  6. Step 6: Final answer
    x = 68,535.17

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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.