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Finding the Fourth Proportional to 87,889.89, 121,295.51 and 49,656.46

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Solution

The fourth proportional to 87,889.89, 121,295.51 and 49,656.46 is: 68,530.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,889.89 : 121,295.51 = 49,656.46 : x
  2. Step 2: Convert to fraction form
    87,889.89/121,295.51 = 49,656.46/x
  3. Step 3: Cross multiply
    87,889.89x = 121,295.51 × 49,656.46
  4. Step 4: Simplify right side
    87,889.89x = 6,023,105,502.61
  5. Step 5: Solve for x
    x = 6,023,105,502.61/87,889.89
  6. Step 6: Final answer
    x = 68,530.13

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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.