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Finding the Fourth Proportional to 117,682.65, 162,405.21 and 63,971.28

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Solution

The fourth proportional to 117,682.65, 162,405.21 and 63,971.28 is: 88,282.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,682.65 : 162,405.21 = 63,971.28 : x
  2. Step 2: Convert to fraction form
    117,682.65/162,405.21 = 63,971.28/x
  3. Step 3: Cross multiply
    117,682.65x = 162,405.21 × 63,971.28
  4. Step 4: Simplify right side
    117,682.65x = 10,389,269,162.37
  5. Step 5: Solve for x
    x = 10,389,269,162.37/117,682.65
  6. Step 6: Final answer
    x = 88,282.08

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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.