Home / 80,648.56-120,976.68-39,130.48

Finding the Fourth Proportional to 80,648.56, 120,976.68 and 39,130.48

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Solution

The fourth proportional to 80,648.56, 120,976.68 and 39,130.48 is: 58,697.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,648.56 : 120,976.68 = 39,130.48 : x
  2. Step 2: Convert to fraction form
    80,648.56/120,976.68 = 39,130.48/x
  3. Step 3: Cross multiply
    80,648.56x = 120,976.68 × 39,130.48
  4. Step 4: Simplify right side
    80,648.56x = 4,733,875,557.21
  5. Step 5: Solve for x
    x = 4,733,875,557.21/80,648.56
  6. Step 6: Final answer
    x = 58,697.58

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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.