Home / 87,483.84-131,228.70-28,320

Finding the Fourth Proportional to 87,483.84, 131,228.70 and 28,320

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Solution

The fourth proportional to 87,483.84, 131,228.70 and 28,320 is: 42,480.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,483.84 : 131,228.70 = 28,320 : x
  2. Step 2: Convert to fraction form
    87,483.84/131,228.70 = 28,320/x
  3. Step 3: Cross multiply
    87,483.84x = 131,228.70 × 28,320
  4. Step 4: Simplify right side
    87,483.84x = 3,716,396,784.00
  5. Step 5: Solve for x
    x = 3,716,396,784.00/87,483.84
  6. Step 6: Final answer
    x = 42,480.95

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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.