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Finding the Fourth Proportional to 117,477.72, 162,120.42 and 63,763.20

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Solution

The fourth proportional to 117,477.72, 162,120.42 and 63,763.20 is: 87,993.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,477.72 : 162,120.42 = 63,763.20 : x
  2. Step 2: Convert to fraction form
    117,477.72/162,120.42 = 63,763.20/x
  3. Step 3: Cross multiply
    117,477.72x = 162,120.42 × 63,763.20
  4. Step 4: Simplify right side
    117,477.72x = 10,337,316,764.54
  5. Step 5: Solve for x
    x = 10,337,316,764.54/117,477.72
  6. Step 6: Final answer
    x = 87,993.85

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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.