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Finding the Fourth Proportional to 108,644.69, 163,013.51 and 45,479.58

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Solution

The fourth proportional to 108,644.69, 163,013.51 and 45,479.58 is: 68,238.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,644.69 : 163,013.51 = 45,479.58 : x
  2. Step 2: Convert to fraction form
    108,644.69/163,013.51 = 45,479.58/x
  3. Step 3: Cross multiply
    108,644.69x = 163,013.51 × 45,479.58
  4. Step 4: Simplify right side
    108,644.69x = 7,413,785,471.52
  5. Step 5: Solve for x
    x = 7,413,785,471.52/108,644.69
  6. Step 6: Final answer
    x = 68,238.82

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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.