Home / 80,429.08-120,565.20-38,297.86

Finding the Fourth Proportional to 80,429.08, 120,565.20 and 38,297.86

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Solution

The fourth proportional to 80,429.08, 120,565.20 and 38,297.86 is: 57,409.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,429.08 : 120,565.20 = 38,297.86 : x
  2. Step 2: Convert to fraction form
    80,429.08/120,565.20 = 38,297.86/x
  3. Step 3: Cross multiply
    80,429.08x = 120,565.20 × 38,297.86
  4. Step 4: Simplify right side
    80,429.08x = 4,617,389,150.47
  5. Step 5: Solve for x
    x = 4,617,389,150.47/80,429.08
  6. Step 6: Final answer
    x = 57,409.45

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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.