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Finding the Fourth Proportional to 84,348.34, 126,541.60 and 25,181.80

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Solution

The fourth proportional to 84,348.34, 126,541.60 and 25,181.80 is: 37,778.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,348.34 : 126,541.60 = 25,181.80 : x
  2. Step 2: Convert to fraction form
    84,348.34/126,541.60 = 25,181.80/x
  3. Step 3: Cross multiply
    84,348.34x = 126,541.60 × 25,181.80
  4. Step 4: Simplify right side
    84,348.34x = 3,186,545,262.88
  5. Step 5: Solve for x
    x = 3,186,545,262.88/84,348.34
  6. Step 6: Final answer
    x = 37,778.40

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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.