Home / 80,105.32-120,083.66-38,005.16

Finding the Fourth Proportional to 80,105.32, 120,083.66 and 38,005.16

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Solution

The fourth proportional to 80,105.32, 120,083.66 and 38,005.16 is: 56,972.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,105.32 : 120,083.66 = 38,005.16 : x
  2. Step 2: Convert to fraction form
    80,105.32/120,083.66 = 38,005.16/x
  3. Step 3: Cross multiply
    80,105.32x = 120,083.66 × 38,005.16
  4. Step 4: Simplify right side
    80,105.32x = 4,563,798,711.69
  5. Step 5: Solve for x
    x = 4,563,798,711.69/80,105.32
  6. Step 6: Final answer
    x = 56,972.48

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1.5x scale

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.