Home / 87,984.42-131,976.64-28,820.40

Finding the Fourth Proportional to 87,984.42, 131,976.64 and 28,820.40

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Solution

The fourth proportional to 87,984.42, 131,976.64 and 28,820.40 is: 43,230.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,984.42 : 131,976.64 = 28,820.40 : x
  2. Step 2: Convert to fraction form
    87,984.42/131,976.64 = 28,820.40/x
  3. Step 3: Cross multiply
    87,984.42x = 131,976.64 × 28,820.40
  4. Step 4: Simplify right side
    87,984.42x = 3,803,619,555.46
  5. Step 5: Solve for x
    x = 3,803,619,555.46/87,984.42
  6. Step 6: Final answer
    x = 43,230.60

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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.