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Finding the Fourth Proportional to 117,478.77, 162,120.30 and 63,763.79

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Solution

The fourth proportional to 117,478.77, 162,120.30 and 63,763.79 is: 87,993.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,478.77 : 162,120.30 = 63,763.79 : x
  2. Step 2: Convert to fraction form
    117,478.77/162,120.30 = 63,763.79/x
  3. Step 3: Cross multiply
    117,478.77x = 162,120.30 × 63,763.79
  4. Step 4: Simplify right side
    117,478.77x = 10,337,404,763.94
  5. Step 5: Solve for x
    x = 10,337,404,763.94/117,478.77
  6. Step 6: Final answer
    x = 87,993.81

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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.