Home / 80,490.17-111,106.25-69,113.96

Finding the Fourth Proportional to 80,490.17, 111,106.25 and 69,113.96

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Solution

The fourth proportional to 80,490.17, 111,106.25 and 69,113.96 is: 95,402.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,490.17 : 111,106.25 = 69,113.96 : x
  2. Step 2: Convert to fraction form
    80,490.17/111,106.25 = 69,113.96/x
  3. Step 3: Cross multiply
    80,490.17x = 111,106.25 × 69,113.96
  4. Step 4: Simplify right side
    80,490.17x = 7,678,992,692.97
  5. Step 5: Solve for x
    x = 7,678,992,692.97/80,490.17
  6. Step 6: Final answer
    x = 95,402.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.