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Finding the Fourth Proportional to 79,446.73, 109,638.38 and 43,149.54

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Solution

The fourth proportional to 79,446.73, 109,638.38 and 43,149.54 is: 59,547.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,446.73 : 109,638.38 = 43,149.54 : x
  2. Step 2: Convert to fraction form
    79,446.73/109,638.38 = 43,149.54/x
  3. Step 3: Cross multiply
    79,446.73x = 109,638.38 × 43,149.54
  4. Step 4: Simplify right side
    79,446.73x = 4,730,845,663.35
  5. Step 5: Solve for x
    x = 4,730,845,663.35/79,446.73
  6. Step 6: Final answer
    x = 59,547.39

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1.5x scale

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.