Home / 80,607.15-120,818.79-38,427.21

Finding the Fourth Proportional to 80,607.15, 120,818.79 and 38,427.21

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Solution

The fourth proportional to 80,607.15, 120,818.79 and 38,427.21 is: 57,596.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,607.15 : 120,818.79 = 38,427.21 : x
  2. Step 2: Convert to fraction form
    80,607.15/120,818.79 = 38,427.21/x
  3. Step 3: Cross multiply
    80,607.15x = 120,818.79 × 38,427.21
  4. Step 4: Simplify right side
    80,607.15x = 4,642,729,015.28
  5. Step 5: Solve for x
    x = 4,642,729,015.28/80,607.15
  6. Step 6: Final answer
    x = 57,596.99

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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.