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Finding the Fourth Proportional to 87,977.80, 131,880.30 and 43,611.40

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Solution

The fourth proportional to 87,977.80, 131,880.30 and 43,611.40 is: 65,374.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,977.80 : 131,880.30 = 43,611.40 : x
  2. Step 2: Convert to fraction form
    87,977.80/131,880.30 = 43,611.40/x
  3. Step 3: Cross multiply
    87,977.80x = 131,880.30 × 43,611.40
  4. Step 4: Simplify right side
    87,977.80x = 5,751,484,515.42
  5. Step 5: Solve for x
    x = 5,751,484,515.42/87,977.80
  6. Step 6: Final answer
    x = 65,374.27

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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.