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Finding the Fourth Proportional to 87,607.86, 131,411.79 and 28,449.51

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Solution

The fourth proportional to 87,607.86, 131,411.79 and 28,449.51 is: 42,674.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,607.86 : 131,411.79 = 28,449.51 : x
  2. Step 2: Convert to fraction form
    87,607.86/131,411.79 = 28,449.51/x
  3. Step 3: Cross multiply
    87,607.86x = 131,411.79 × 28,449.51
  4. Step 4: Simplify right side
    87,607.86x = 3,738,601,033.72
  5. Step 5: Solve for x
    x = 3,738,601,033.72/87,607.86
  6. Step 6: Final answer
    x = 42,674.27

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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.