Home / 87,712.70-131,570.28-28,548.68

Finding the Fourth Proportional to 87,712.70, 131,570.28 and 28,548.68

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Solution

The fourth proportional to 87,712.70, 131,570.28 and 28,548.68 is: 42,823.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,712.70 : 131,570.28 = 28,548.68 : x
  2. Step 2: Convert to fraction form
    87,712.70/131,570.28 = 28,548.68/x
  3. Step 3: Cross multiply
    87,712.70x = 131,570.28 × 28,548.68
  4. Step 4: Simplify right side
    87,712.70x = 3,756,157,821.23
  5. Step 5: Solve for x
    x = 3,756,157,821.23/87,712.70
  6. Step 6: Final answer
    x = 42,823.42

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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.