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Finding the Fourth Proportional to 69,178.25, 95,487.15 and 40,504.63

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Solution

The fourth proportional to 69,178.25, 95,487.15 and 40,504.63 is: 55,908.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,178.25 : 95,487.15 = 40,504.63 : x
  2. Step 2: Convert to fraction form
    69,178.25/95,487.15 = 40,504.63/x
  3. Step 3: Cross multiply
    69,178.25x = 95,487.15 × 40,504.63
  4. Step 4: Simplify right side
    69,178.25x = 3,867,671,951.76
  5. Step 5: Solve for x
    x = 3,867,671,951.76/69,178.25
  6. Step 6: Final answer
    x = 55,908.79

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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.