Home / 87,143.86-120,260.92-48,905.75

Finding the Fourth Proportional to 87,143.86, 120,260.92 and 48,905.75

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Solution

The fourth proportional to 87,143.86, 120,260.92 and 48,905.75 is: 67,491.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,143.86 : 120,260.92 = 48,905.75 : x
  2. Step 2: Convert to fraction form
    87,143.86/120,260.92 = 48,905.75/x
  3. Step 3: Cross multiply
    87,143.86x = 120,260.92 × 48,905.75
  4. Step 4: Simplify right side
    87,143.86x = 5,881,449,943.11
  5. Step 5: Solve for x
    x = 5,881,449,943.11/87,143.86
  6. Step 6: Final answer
    x = 67,491.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.