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Finding the Fourth Proportional to 90,702.30, 125,163.64 and 50,414.70

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Solution

The fourth proportional to 90,702.30, 125,163.64 and 50,414.70 is: 69,569.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,702.30 : 125,163.64 = 50,414.70 : x
  2. Step 2: Convert to fraction form
    90,702.30/125,163.64 = 50,414.70/x
  3. Step 3: Cross multiply
    90,702.30x = 125,163.64 × 50,414.70
  4. Step 4: Simplify right side
    90,702.30x = 6,310,087,361.51
  5. Step 5: Solve for x
    x = 6,310,087,361.51/90,702.30
  6. Step 6: Final answer
    x = 69,569.21

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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.