Home / 80,511.60-120,767.04-68,554.02

Finding the Fourth Proportional to 80,511.60, 120,767.04 and 68,554.02

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Solution

The fourth proportional to 80,511.60, 120,767.04 and 68,554.02 is: 102,830.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,511.60 : 120,767.04 = 68,554.02 : x
  2. Step 2: Convert to fraction form
    80,511.60/120,767.04 = 68,554.02/x
  3. Step 3: Cross multiply
    80,511.60x = 120,767.04 × 68,554.02
  4. Step 4: Simplify right side
    80,511.60x = 8,279,066,075.50
  5. Step 5: Solve for x
    x = 8,279,066,075.50/80,511.60
  6. Step 6: Final answer
    x = 102,830.72

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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.