Home / 87,509.61-131,291.65-31,350.20

Finding the Fourth Proportional to 87,509.61, 131,291.65 and 31,350.20

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Solution

The fourth proportional to 87,509.61, 131,291.65 and 31,350.20 is: 47,035.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,509.61 : 131,291.65 = 31,350.20 : x
  2. Step 2: Convert to fraction form
    87,509.61/131,291.65 = 31,350.20/x
  3. Step 3: Cross multiply
    87,509.61x = 131,291.65 × 31,350.20
  4. Step 4: Simplify right side
    87,509.61x = 4,116,019,485.83
  5. Step 5: Solve for x
    x = 4,116,019,485.83/87,509.61
  6. Step 6: Final answer
    x = 47,035.06

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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.