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Finding the Fourth Proportional to 69,409.59, 95,786.19 and 40,750.79

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Solution

The fourth proportional to 69,409.59, 95,786.19 and 40,750.79 is: 56,236.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,409.59 : 95,786.19 = 40,750.79 : x
  2. Step 2: Convert to fraction form
    69,409.59/95,786.19 = 40,750.79/x
  3. Step 3: Cross multiply
    69,409.59x = 95,786.19 × 40,750.79
  4. Step 4: Simplify right side
    69,409.59x = 3,903,362,434.66
  5. Step 5: Solve for x
    x = 3,903,362,434.66/69,409.59
  6. Step 6: Final answer
    x = 56,236.64

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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.