Home / 87,448,439.20-131,172,658.80-80,879,274.40

Finding the Fourth Proportional to 87,448,439.20, 131,172,658.80 and 80,879,274.40

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Solution

The fourth proportional to 87,448,439.20, 131,172,658.80 and 80,879,274.40 is: 121,318,911.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,448,439.20 : 131,172,658.80 = 80,879,274.40 : x
  2. Step 2: Convert to fraction form
    87,448,439.20/131,172,658.80 = 80,879,274.40/x
  3. Step 3: Cross multiply
    87,448,439.20x = 131,172,658.80 × 80,879,274.40
  4. Step 4: Simplify right side
    87,448,439.20x = 10,609,149,464,862,776
  5. Step 5: Solve for x
    x = 10,609,149,464,862,776/87,448,439.20
  6. Step 6: Final answer
    x = 121,318,911.60

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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.