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Finding the Fourth Proportional to 90,168.94, 124,422.96 and 49,877.11

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Solution

The fourth proportional to 90,168.94, 124,422.96 and 49,877.11 is: 68,824.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,168.94 : 124,422.96 = 49,877.11 : x
  2. Step 2: Convert to fraction form
    90,168.94/124,422.96 = 49,877.11/x
  3. Step 3: Cross multiply
    90,168.94x = 124,422.96 × 49,877.11
  4. Step 4: Simplify right side
    90,168.94x = 6,205,857,662.45
  5. Step 5: Solve for x
    x = 6,205,857,662.45/90,168.94
  6. Step 6: Final answer
    x = 68,824.78

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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.