Home / 87,485.52-131,214.24-31,315.20

Finding the Fourth Proportional to 87,485.52, 131,214.24 and 31,315.20

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Solution

The fourth proportional to 87,485.52, 131,214.24 and 31,315.20 is: 46,967.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,485.52 : 131,214.24 = 31,315.20 : x
  2. Step 2: Convert to fraction form
    87,485.52/131,214.24 = 31,315.20/x
  3. Step 3: Cross multiply
    87,485.52x = 131,214.24 × 31,315.20
  4. Step 4: Simplify right side
    87,485.52x = 4,109,000,168.45
  5. Step 5: Solve for x
    x = 4,109,000,168.45/87,485.52
  6. Step 6: Final answer
    x = 46,967.77

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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.