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Finding the Fourth Proportional to 90,806.90, 125,314.29 and 50,525.30

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Solution

The fourth proportional to 90,806.90, 125,314.29 and 50,525.30 is: 69,725.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,806.90 : 125,314.29 = 50,525.30 : x
  2. Step 2: Convert to fraction form
    90,806.90/125,314.29 = 50,525.30/x
  3. Step 3: Cross multiply
    90,806.90x = 125,314.29 × 50,525.30
  4. Step 4: Simplify right side
    90,806.90x = 6,331,542,096.54
  5. Step 5: Solve for x
    x = 6,331,542,096.54/90,806.90
  6. Step 6: Final answer
    x = 69,725.34

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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.