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Finding the Fourth Proportional to 84,348.66, 126,585.28 and 39,975.54

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Solution

The fourth proportional to 84,348.66, 126,585.28 and 39,975.54 is: 59,992.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,348.66 : 126,585.28 = 39,975.54 : x
  2. Step 2: Convert to fraction form
    84,348.66/126,585.28 = 39,975.54/x
  3. Step 3: Cross multiply
    84,348.66x = 126,585.28 × 39,975.54
  4. Step 4: Simplify right side
    84,348.66x = 5,060,315,211.37
  5. Step 5: Solve for x
    x = 5,060,315,211.37/84,348.66
  6. Step 6: Final answer
    x = 59,992.84

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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.