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Finding the Fourth Proportional to 31,074.60, 46,611.90 and 8,889.30

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Solution

The fourth proportional to 31,074.60, 46,611.90 and 8,889.30 is: 13,333.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,074.60 : 46,611.90 = 8,889.30 : x
  2. Step 2: Convert to fraction form
    31,074.60/46,611.90 = 8,889.30/x
  3. Step 3: Cross multiply
    31,074.60x = 46,611.90 × 8,889.30
  4. Step 4: Simplify right side
    31,074.60x = 414,347,162.67
  5. Step 5: Solve for x
    x = 414,347,162.67/31,074.60
  6. Step 6: Final answer
    x = 13,333.95

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Similar ratio
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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.