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Finding the Fourth Proportional to 85,366.80, 127,963.80 and 50,288.40

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Solution

The fourth proportional to 85,366.80, 127,963.80 and 50,288.40 is: 75,381.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,366.80 : 127,963.80 = 50,288.40 : x
  2. Step 2: Convert to fraction form
    85,366.80/127,963.80 = 50,288.40/x
  3. Step 3: Cross multiply
    85,366.80x = 127,963.80 × 50,288.40
  4. Step 4: Simplify right side
    85,366.80x = 6,435,094,759.92
  5. Step 5: Solve for x
    x = 6,435,094,759.92/85,366.80
  6. Step 6: Final answer
    x = 75,381.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.