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Finding the Fourth Proportional to 108,957, 163,444.89 and 30,071.22

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Solution

The fourth proportional to 108,957, 163,444.89 and 30,071.22 is: 45,109.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,957 : 163,444.89 = 30,071.22 : x
  2. Step 2: Convert to fraction form
    108,957/163,444.89 = 30,071.22/x
  3. Step 3: Cross multiply
    108,957x = 163,444.89 × 30,071.22
  4. Step 4: Simplify right side
    108,957x = 4,914,987,245.07
  5. Step 5: Solve for x
    x = 4,914,987,245.07/108,957
  6. Step 6: Final answer
    x = 45,109.42

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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.