Home / 87,480.84-131,224.20-28,317

Finding the Fourth Proportional to 87,480.84, 131,224.20 and 28,317

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Solution

The fourth proportional to 87,480.84, 131,224.20 and 28,317 is: 42,476.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,480.84 : 131,224.20 = 28,317 : x
  2. Step 2: Convert to fraction form
    87,480.84/131,224.20 = 28,317/x
  3. Step 3: Cross multiply
    87,480.84x = 131,224.20 × 28,317
  4. Step 4: Simplify right side
    87,480.84x = 3,715,875,671.40
  5. Step 5: Solve for x
    x = 3,715,875,671.40/87,480.84
  6. Step 6: Final answer
    x = 42,476.45

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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.