Home / 80,431.88-120,524.74-42,997.26

Finding the Fourth Proportional to 80,431.88, 120,524.74 and 42,997.26

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Solution

The fourth proportional to 80,431.88, 120,524.74 and 42,997.26 is: 64,430.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,431.88 : 120,524.74 = 42,997.26 : x
  2. Step 2: Convert to fraction form
    80,431.88/120,524.74 = 42,997.26/x
  3. Step 3: Cross multiply
    80,431.88x = 120,524.74 × 42,997.26
  4. Step 4: Simplify right side
    80,431.88x = 5,182,233,582.21
  5. Step 5: Solve for x
    x = 5,182,233,582.21/80,431.88
  6. Step 6: Final answer
    x = 64,430.09

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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.