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Finding the Fourth Proportional to 50,679, 69,939.18 and 28,323

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Solution

The fourth proportional to 50,679, 69,939.18 and 28,323 is: 39,086.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,679 : 69,939.18 = 28,323 : x
  2. Step 2: Convert to fraction form
    50,679/69,939.18 = 28,323/x
  3. Step 3: Cross multiply
    50,679x = 69,939.18 × 28,323
  4. Step 4: Simplify right side
    50,679x = 1,980,887,395.14
  5. Step 5: Solve for x
    x = 1,980,887,395.14/50,679
  6. Step 6: Final answer
    x = 39,086.95

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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.