Home / 80,513.18-120,772.49-21,354.83

Finding the Fourth Proportional to 80,513.18, 120,772.49 and 21,354.83

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Solution

The fourth proportional to 80,513.18, 120,772.49 and 21,354.83 is: 32,032.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,513.18 : 120,772.49 = 21,354.83 : x
  2. Step 2: Convert to fraction form
    80,513.18/120,772.49 = 21,354.83/x
  3. Step 3: Cross multiply
    80,513.18x = 120,772.49 × 21,354.83
  4. Step 4: Simplify right side
    80,513.18x = 2,579,075,281.99
  5. Step 5: Solve for x
    x = 2,579,075,281.99/80,513.18
  6. Step 6: Final answer
    x = 32,032.96

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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.