Home / 87,500.60-131,271.78-28,336.40

Finding the Fourth Proportional to 87,500.60, 131,271.78 and 28,336.40

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Solution

The fourth proportional to 87,500.60, 131,271.78 and 28,336.40 is: 42,511.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,500.60 : 131,271.78 = 28,336.40 : x
  2. Step 2: Convert to fraction form
    87,500.60/131,271.78 = 28,336.40/x
  3. Step 3: Cross multiply
    87,500.60x = 131,271.78 × 28,336.40
  4. Step 4: Simplify right side
    87,500.60x = 3,719,769,666.79
  5. Step 5: Solve for x
    x = 3,719,769,666.79/87,500.60
  6. Step 6: Final answer
    x = 42,511.36

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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.