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Finding the Fourth Proportional to 108,863.52, 163,358.28 and 45,678

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Solution

The fourth proportional to 108,863.52, 163,358.28 and 45,678 is: 68,543.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,863.52 : 163,358.28 = 45,678 : x
  2. Step 2: Convert to fraction form
    108,863.52/163,358.28 = 45,678/x
  3. Step 3: Cross multiply
    108,863.52x = 163,358.28 × 45,678
  4. Step 4: Simplify right side
    108,863.52x = 7,461,879,513.84
  5. Step 5: Solve for x
    x = 7,461,879,513.84/108,863.52
  6. Step 6: Final answer
    x = 68,543.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.