Home / 87,407.67-131,112.27-28,243.35

Finding the Fourth Proportional to 87,407.67, 131,112.27 and 28,243.35

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Solution

The fourth proportional to 87,407.67, 131,112.27 and 28,243.35 is: 42,365.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,407.67 : 131,112.27 = 28,243.35 : x
  2. Step 2: Convert to fraction form
    87,407.67/131,112.27 = 28,243.35/x
  3. Step 3: Cross multiply
    87,407.67x = 131,112.27 × 28,243.35
  4. Step 4: Simplify right side
    87,407.67x = 3,703,049,730.90
  5. Step 5: Solve for x
    x = 3,703,049,730.90/87,407.67
  6. Step 6: Final answer
    x = 42,365.27

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1.5x scale

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.