Home / 87,333.86-131,028.46-31,172.72

Finding the Fourth Proportional to 87,333.86, 131,028.46 and 31,172.72

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Solution

The fourth proportional to 87,333.86, 131,028.46 and 31,172.72 is: 46,768.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,333.86 : 131,028.46 = 31,172.72 : x
  2. Step 2: Convert to fraction form
    87,333.86/131,028.46 = 31,172.72/x
  3. Step 3: Cross multiply
    87,333.86x = 131,028.46 × 31,172.72
  4. Step 4: Simplify right side
    87,333.86x = 4,084,513,495.61
  5. Step 5: Solve for x
    x = 4,084,513,495.61/87,333.86
  6. Step 6: Final answer
    x = 46,768.96

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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.