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Finding the Fourth Proportional to 112,859.63, 169,344.92 and 45,388.97

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Solution

The fourth proportional to 112,859.63, 169,344.92 and 45,388.97 is: 68,105.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,859.63 : 169,344.92 = 45,388.97 : x
  2. Step 2: Convert to fraction form
    112,859.63/169,344.92 = 45,388.97/x
  3. Step 3: Cross multiply
    112,859.63x = 169,344.92 × 45,388.97
  4. Step 4: Simplify right side
    112,859.63x = 7,686,392,030.37
  5. Step 5: Solve for x
    x = 7,686,392,030.37/112,859.63
  6. Step 6: Final answer
    x = 68,105.77

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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.