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Finding the Fourth Proportional to 56,753.65, 85,101.31 and 30,480.49

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Solution

The fourth proportional to 56,753.65, 85,101.31 and 30,480.49 is: 45,705.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,753.65 : 85,101.31 = 30,480.49 : x
  2. Step 2: Convert to fraction form
    56,753.65/85,101.31 = 30,480.49/x
  3. Step 3: Cross multiply
    56,753.65x = 85,101.31 × 30,480.49
  4. Step 4: Simplify right side
    56,753.65x = 2,593,929,628.44
  5. Step 5: Solve for x
    x = 2,593,929,628.44/56,753.65
  6. Step 6: Final answer
    x = 45,705.07

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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.