Home / 87,812.75-131,613.96-45,074.32

Finding the Fourth Proportional to 87,812.75, 131,613.96 and 45,074.32

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Solution

The fourth proportional to 87,812.75, 131,613.96 and 45,074.32 is: 67,557.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,812.75 : 131,613.96 = 45,074.32 : x
  2. Step 2: Convert to fraction form
    87,812.75/131,613.96 = 45,074.32/x
  3. Step 3: Cross multiply
    87,812.75x = 131,613.96 × 45,074.32
  4. Step 4: Simplify right side
    87,812.75x = 5,932,409,749.51
  5. Step 5: Solve for x
    x = 5,932,409,749.51/87,812.75
  6. Step 6: Final answer
    x = 67,557.50

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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.