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Finding the Fourth Proportional to 81,203.30, 112,046.88 and 45,393.62

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Solution

The fourth proportional to 81,203.30, 112,046.88 and 45,393.62 is: 62,635.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,203.30 : 112,046.88 = 45,393.62 : x
  2. Step 2: Convert to fraction form
    81,203.30/112,046.88 = 45,393.62/x
  3. Step 3: Cross multiply
    81,203.30x = 112,046.88 × 45,393.62
  4. Step 4: Simplify right side
    81,203.30x = 5,086,213,492.91
  5. Step 5: Solve for x
    x = 5,086,213,492.91/81,203.30
  6. Step 6: Final answer
    x = 62,635.55

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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.