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Finding the Fourth Proportional to 50,679.88, 69,938.06 and 28,323.88

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Solution

The fourth proportional to 50,679.88, 69,938.06 and 28,323.88 is: 39,086.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,679.88 : 69,938.06 = 28,323.88 : x
  2. Step 2: Convert to fraction form
    50,679.88/69,938.06 = 28,323.88/x
  3. Step 3: Cross multiply
    50,679.88x = 69,938.06 × 28,323.88
  4. Step 4: Simplify right side
    50,679.88x = 1,980,917,218.87
  5. Step 5: Solve for x
    x = 1,980,917,218.87/50,679.88
  6. Step 6: Final answer
    x = 39,086.86

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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.