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Finding the Fourth Proportional to 71,611.80, 107,466.30 and 40,021.80

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Solution

The fourth proportional to 71,611.80, 107,466.30 and 40,021.80 is: 60,059.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,611.80 : 107,466.30 = 40,021.80 : x
  2. Step 2: Convert to fraction form
    71,611.80/107,466.30 = 40,021.80/x
  3. Step 3: Cross multiply
    71,611.80x = 107,466.30 × 40,021.80
  4. Step 4: Simplify right side
    71,611.80x = 4,300,994,765.34
  5. Step 5: Solve for x
    x = 4,300,994,765.34/71,611.80
  6. Step 6: Final answer
    x = 60,059.86

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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.