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Finding the Fourth Proportional to 108,960.81, 163,441.22 and 38,790.91

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Solution

The fourth proportional to 108,960.81, 163,441.22 and 38,790.91 is: 58,186.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,960.81 : 163,441.22 = 38,790.91 : x
  2. Step 2: Convert to fraction form
    108,960.81/163,441.22 = 38,790.91/x
  3. Step 3: Cross multiply
    108,960.81x = 163,441.22 × 38,790.91
  4. Step 4: Simplify right side
    108,960.81x = 6,340,033,655.31
  5. Step 5: Solve for x
    x = 6,340,033,655.31/108,960.81
  6. Step 6: Final answer
    x = 58,186.37

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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.