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Finding the Fourth Proportional to 92,892, 128,195.82 and 54,653.52

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Solution

The fourth proportional to 92,892, 128,195.82 and 54,653.52 is: 75,424.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,892 : 128,195.82 = 54,653.52 : x
  2. Step 2: Convert to fraction form
    92,892/128,195.82 = 54,653.52/x
  3. Step 3: Cross multiply
    92,892x = 128,195.82 × 54,653.52
  4. Step 4: Simplify right side
    92,892x = 7,006,352,812.29
  5. Step 5: Solve for x
    x = 7,006,352,812.29/92,892
  6. Step 6: Final answer
    x = 75,424.72

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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.