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Finding the Fourth Proportional to 117,479.46, 162,121.80 and 63,764.47

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Solution

The fourth proportional to 117,479.46, 162,121.80 and 63,764.47 is: 87,995.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,479.46 : 162,121.80 = 63,764.47 : x
  2. Step 2: Convert to fraction form
    117,479.46/162,121.80 = 63,764.47/x
  3. Step 3: Cross multiply
    117,479.46x = 162,121.80 × 63,764.47
  4. Step 4: Simplify right side
    117,479.46x = 10,337,610,182.28
  5. Step 5: Solve for x
    x = 10,337,610,182.28/117,479.46
  6. Step 6: Final answer
    x = 87,995.04

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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.