Home / 80,021.64-120,050.32-30,102.16

Finding the Fourth Proportional to 80,021.64, 120,050.32 and 30,102.16

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Solution

The fourth proportional to 80,021.64, 120,050.32 and 30,102.16 is: 45,159.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,021.64 : 120,050.32 = 30,102.16 : x
  2. Step 2: Convert to fraction form
    80,021.64/120,050.32 = 30,102.16/x
  3. Step 3: Cross multiply
    80,021.64x = 120,050.32 × 30,102.16
  4. Step 4: Simplify right side
    80,021.64x = 3,613,773,940.69
  5. Step 5: Solve for x
    x = 3,613,773,940.69/80,021.64
  6. Step 6: Final answer
    x = 45,159.96

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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.