Home / 89,433.79-123,345.39-55,418.65

Finding the Fourth Proportional to 89,433.79, 123,345.39 and 55,418.65

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Solution

The fourth proportional to 89,433.79, 123,345.39 and 55,418.65 is: 76,432.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,433.79 : 123,345.39 = 55,418.65 : x
  2. Step 2: Convert to fraction form
    89,433.79/123,345.39 = 55,418.65/x
  3. Step 3: Cross multiply
    89,433.79x = 123,345.39 × 55,418.65
  4. Step 4: Simplify right side
    89,433.79x = 6,835,634,997.52
  5. Step 5: Solve for x
    x = 6,835,634,997.52/89,433.79
  6. Step 6: Final answer
    x = 76,432.35

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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.