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Finding the Fourth Proportional to 90,611.75, 125,040.75 and 50,328.08

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Solution

The fourth proportional to 90,611.75, 125,040.75 and 50,328.08 is: 69,450.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,611.75 : 125,040.75 = 50,328.08 : x
  2. Step 2: Convert to fraction form
    90,611.75/125,040.75 = 50,328.08/x
  3. Step 3: Cross multiply
    90,611.75x = 125,040.75 × 50,328.08
  4. Step 4: Simplify right side
    90,611.75x = 6,293,060,869.26
  5. Step 5: Solve for x
    x = 6,293,060,869.26/90,611.75
  6. Step 6: Final answer
    x = 69,450.83

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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.