Home / 80,531.04-120,813.16-30,601.84

Finding the Fourth Proportional to 80,531.04, 120,813.16 and 30,601.84

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Solution

The fourth proportional to 80,531.04, 120,813.16 and 30,601.84 is: 45,909.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,531.04 : 120,813.16 = 30,601.84 : x
  2. Step 2: Convert to fraction form
    80,531.04/120,813.16 = 30,601.84/x
  3. Step 3: Cross multiply
    80,531.04x = 120,813.16 × 30,601.84
  4. Step 4: Simplify right side
    80,531.04x = 3,697,104,992.21
  5. Step 5: Solve for x
    x = 3,697,104,992.21/80,531.04
  6. Step 6: Final answer
    x = 45,909.07

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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.