Home / 89,769.72-123,714.40-67,068.66

Finding the Fourth Proportional to 89,769.72, 123,714.40 and 67,068.66

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Solution

The fourth proportional to 89,769.72, 123,714.40 and 67,068.66 is: 92,429.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,769.72 : 123,714.40 = 67,068.66 : x
  2. Step 2: Convert to fraction form
    89,769.72/123,714.40 = 67,068.66/x
  3. Step 3: Cross multiply
    89,769.72x = 123,714.40 × 67,068.66
  4. Step 4: Simplify right side
    89,769.72x = 8,297,359,339.99
  5. Step 5: Solve for x
    x = 8,297,359,339.99/89,769.72
  6. Step 6: Final answer
    x = 92,429.37

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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.