Home / 80,371.08-120,564.72-21,210.84

Finding the Fourth Proportional to 80,371.08, 120,564.72 and 21,210.84

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Solution

The fourth proportional to 80,371.08, 120,564.72 and 21,210.84 is: 31,818.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,371.08 : 120,564.72 = 21,210.84 : x
  2. Step 2: Convert to fraction form
    80,371.08/120,564.72 = 21,210.84/x
  3. Step 3: Cross multiply
    80,371.08x = 120,564.72 × 21,210.84
  4. Step 4: Simplify right side
    80,371.08x = 2,557,278,985.56
  5. Step 5: Solve for x
    x = 2,557,278,985.56/80,371.08
  6. Step 6: Final answer
    x = 31,818.40

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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.