Home / 87,811.68-131,730.34-28,632.80

Finding the Fourth Proportional to 87,811.68, 131,730.34 and 28,632.80

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Solution

The fourth proportional to 87,811.68, 131,730.34 and 28,632.80 is: 42,953.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,811.68 : 131,730.34 = 28,632.80 : x
  2. Step 2: Convert to fraction form
    87,811.68/131,730.34 = 28,632.80/x
  3. Step 3: Cross multiply
    87,811.68x = 131,730.34 × 28,632.80
  4. Step 4: Simplify right side
    87,811.68x = 3,771,808,479.15
  5. Step 5: Solve for x
    x = 3,771,808,479.15/87,811.68
  6. Step 6: Final answer
    x = 42,953.38

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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.