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Finding the Fourth Proportional to 92,054, 138,082.68 and 28,872.72

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Solution

The fourth proportional to 92,054, 138,082.68 and 28,872.72 is: 43,309.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,054 : 138,082.68 = 28,872.72 : x
  2. Step 2: Convert to fraction form
    92,054/138,082.68 = 28,872.72/x
  3. Step 3: Cross multiply
    92,054x = 138,082.68 × 28,872.72
  4. Step 4: Simplify right side
    92,054x = 3,986,822,556.49
  5. Step 5: Solve for x
    x = 3,986,822,556.49/92,054
  6. Step 6: Final answer
    x = 43,309.61

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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.