Home / 83,971.92-115,871.40-47,670.96

Finding the Fourth Proportional to 83,971.92, 115,871.40 and 47,670.96

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Solution

The fourth proportional to 83,971.92, 115,871.40 and 47,670.96 is: 65,780.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,971.92 : 115,871.40 = 47,670.96 : x
  2. Step 2: Convert to fraction form
    83,971.92/115,871.40 = 47,670.96/x
  3. Step 3: Cross multiply
    83,971.92x = 115,871.40 × 47,670.96
  4. Step 4: Simplify right side
    83,971.92x = 5,523,700,874.54
  5. Step 5: Solve for x
    x = 5,523,700,874.54/83,971.92
  6. Step 6: Final answer
    x = 65,780.33

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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.