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Finding the Fourth Proportional to 67,963.48, 101,945.22 and 21,220.36

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Solution

The fourth proportional to 67,963.48, 101,945.22 and 21,220.36 is: 31,830.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,963.48 : 101,945.22 = 21,220.36 : x
  2. Step 2: Convert to fraction form
    67,963.48/101,945.22 = 21,220.36/x
  3. Step 3: Cross multiply
    67,963.48x = 101,945.22 × 21,220.36
  4. Step 4: Simplify right side
    67,963.48x = 2,163,314,268.68
  5. Step 5: Solve for x
    x = 2,163,314,268.68/67,963.48
  6. Step 6: Final answer
    x = 31,830.54

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1.5x scale

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.