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Finding the Fourth Proportional to 81,841.56, 113,004.90 and 63,905.46

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Solution

The fourth proportional to 81,841.56, 113,004.90 and 63,905.46 is: 88,239.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,841.56 : 113,004.90 = 63,905.46 : x
  2. Step 2: Convert to fraction form
    81,841.56/113,004.90 = 63,905.46/x
  3. Step 3: Cross multiply
    81,841.56x = 113,004.90 × 63,905.46
  4. Step 4: Simplify right side
    81,841.56x = 7,221,630,116.75
  5. Step 5: Solve for x
    x = 7,221,630,116.75/81,841.56
  6. Step 6: Final answer
    x = 88,239.16

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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.