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Finding the Fourth Proportional to 81,358.41, 112,195.72 and 63,446.88

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Solution

The fourth proportional to 81,358.41, 112,195.72 and 63,446.88 is: 87,495.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,358.41 : 112,195.72 = 63,446.88 : x
  2. Step 2: Convert to fraction form
    81,358.41/112,195.72 = 63,446.88/x
  3. Step 3: Cross multiply
    81,358.41x = 112,195.72 × 63,446.88
  4. Step 4: Simplify right side
    81,358.41x = 7,118,468,383.35
  5. Step 5: Solve for x
    x = 7,118,468,383.35/81,358.41
  6. Step 6: Final answer
    x = 87,495.18

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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.