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Finding the Fourth Proportional to 89,628, 134,432.68 and 56,249.12

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Solution

The fourth proportional to 89,628, 134,432.68 and 56,249.12 is: 84,367.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,628 : 134,432.68 = 56,249.12 : x
  2. Step 2: Convert to fraction form
    89,628/134,432.68 = 56,249.12/x
  3. Step 3: Cross multiply
    89,628x = 134,432.68 × 56,249.12
  4. Step 4: Simplify right side
    89,628x = 7,561,719,949.24
  5. Step 5: Solve for x
    x = 7,561,719,949.24/89,628
  6. Step 6: Final answer
    x = 84,367.83

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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.