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Finding the Fourth Proportional to 61,940.49, 85,491.49 and 40,721.73

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Solution

The fourth proportional to 61,940.49, 85,491.49 and 40,721.73 is: 56,204.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,940.49 : 85,491.49 = 40,721.73 : x
  2. Step 2: Convert to fraction form
    61,940.49/85,491.49 = 40,721.73/x
  3. Step 3: Cross multiply
    61,940.49x = 85,491.49 × 40,721.73
  4. Step 4: Simplify right side
    61,940.49x = 3,481,361,373.08
  5. Step 5: Solve for x
    x = 3,481,361,373.08/61,940.49
  6. Step 6: Final answer
    x = 56,204.94

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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.