Home / 87,814.80-131,708.70-28,650.51

Finding the Fourth Proportional to 87,814.80, 131,708.70 and 28,650.51

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Solution

The fourth proportional to 87,814.80, 131,708.70 and 28,650.51 is: 42,971.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,814.80 : 131,708.70 = 28,650.51 : x
  2. Step 2: Convert to fraction form
    87,814.80/131,708.70 = 28,650.51/x
  3. Step 3: Cross multiply
    87,814.80x = 131,708.70 × 28,650.51
  4. Step 4: Simplify right side
    87,814.80x = 3,773,521,426.44
  5. Step 5: Solve for x
    x = 3,773,521,426.44/87,814.80
  6. Step 6: Final answer
    x = 42,971.36

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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.