Home / 87,289.50-120,460.32-49,564.56

Finding the Fourth Proportional to 87,289.50, 120,460.32 and 49,564.56

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Solution

The fourth proportional to 87,289.50, 120,460.32 and 49,564.56 is: 68,399.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,289.50 : 120,460.32 = 49,564.56 : x
  2. Step 2: Convert to fraction form
    87,289.50/120,460.32 = 49,564.56/x
  3. Step 3: Cross multiply
    87,289.50x = 120,460.32 × 49,564.56
  4. Step 4: Simplify right side
    87,289.50x = 5,970,562,758.26
  5. Step 5: Solve for x
    x = 5,970,562,758.26/87,289.50
  6. Step 6: Final answer
    x = 68,399.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.