Home / 87,478.10-131,237.98-28,313.78

Finding the Fourth Proportional to 87,478.10, 131,237.98 and 28,313.78

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Solution

The fourth proportional to 87,478.10, 131,237.98 and 28,313.78 is: 42,477.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,478.10 : 131,237.98 = 28,313.78 : x
  2. Step 2: Convert to fraction form
    87,478.10/131,237.98 = 28,313.78/x
  3. Step 3: Cross multiply
    87,478.10x = 131,237.98 × 28,313.78
  4. Step 4: Simplify right side
    87,478.10x = 3,715,843,293.36
  5. Step 5: Solve for x
    x = 3,715,843,293.36/87,478.10
  6. Step 6: Final answer
    x = 42,477.41

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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.