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Finding the Fourth Proportional to 64,930.69, 89,604.39 and 35,859.12

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Solution

The fourth proportional to 64,930.69, 89,604.39 and 35,859.12 is: 49,485.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,930.69 : 89,604.39 = 35,859.12 : x
  2. Step 2: Convert to fraction form
    64,930.69/89,604.39 = 35,859.12/x
  3. Step 3: Cross multiply
    64,930.69x = 89,604.39 × 35,859.12
  4. Step 4: Simplify right side
    64,930.69x = 3,213,134,573.54
  5. Step 5: Solve for x
    x = 3,213,134,573.54/64,930.69
  6. Step 6: Final answer
    x = 49,485.61

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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.