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Finding the Fourth Proportional to 117,855.92, 162,639.48 and 64,863.92

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Solution

The fourth proportional to 117,855.92, 162,639.48 and 64,863.92 is: 89,511.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,855.92 : 162,639.48 = 64,863.92 : x
  2. Step 2: Convert to fraction form
    117,855.92/162,639.48 = 64,863.92/x
  3. Step 3: Cross multiply
    117,855.92x = 162,639.48 × 64,863.92
  4. Step 4: Simplify right side
    117,855.92x = 10,549,434,219.56
  5. Step 5: Solve for x
    x = 10,549,434,219.56/117,855.92
  6. Step 6: Final answer
    x = 89,511.28

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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.