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Finding the Fourth Proportional to 64,678.56, 89,249.28 and 36,383.76

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Solution

The fourth proportional to 64,678.56, 89,249.28 and 36,383.76 is: 50,205.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,678.56 : 89,249.28 = 36,383.76 : x
  2. Step 2: Convert to fraction form
    64,678.56/89,249.28 = 36,383.76/x
  3. Step 3: Cross multiply
    64,678.56x = 89,249.28 × 36,383.76
  4. Step 4: Simplify right side
    64,678.56x = 3,247,224,383.69
  5. Step 5: Solve for x
    x = 3,247,224,383.69/64,678.56
  6. Step 6: Final answer
    x = 50,205.58

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1.5x scale

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.