Home / 87,355.86-131,040.63-31,208.10

Finding the Fourth Proportional to 87,355.86, 131,040.63 and 31,208.10

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Solution

The fourth proportional to 87,355.86, 131,040.63 and 31,208.10 is: 46,814.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,355.86 : 131,040.63 = 31,208.10 : x
  2. Step 2: Convert to fraction form
    87,355.86/131,040.63 = 31,208.10/x
  3. Step 3: Cross multiply
    87,355.86x = 131,040.63 × 31,208.10
  4. Step 4: Simplify right side
    87,355.86x = 4,089,529,085.10
  5. Step 5: Solve for x
    x = 4,089,529,085.10/87,355.86
  6. Step 6: Final answer
    x = 46,814.59

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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.