Home / 80,591.45-120,887.04-21,427.13

Finding the Fourth Proportional to 80,591.45, 120,887.04 and 21,427.13

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Solution

The fourth proportional to 80,591.45, 120,887.04 and 21,427.13 is: 32,140.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,591.45 : 120,887.04 = 21,427.13 : x
  2. Step 2: Convert to fraction form
    80,591.45/120,887.04 = 21,427.13/x
  3. Step 3: Cross multiply
    80,591.45x = 120,887.04 × 21,427.13
  4. Step 4: Simplify right side
    80,591.45x = 2,590,262,321.40
  5. Step 5: Solve for x
    x = 2,590,262,321.40/80,591.45
  6. Step 6: Final answer
    x = 32,140.66

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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.