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Finding the Fourth Proportional to 72,211.88, 108,266.94 and 27,801.32

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Solution

The fourth proportional to 72,211.88, 108,266.94 and 27,801.32 is: 41,682.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,211.88 : 108,266.94 = 27,801.32 : x
  2. Step 2: Convert to fraction form
    72,211.88/108,266.94 = 27,801.32/x
  3. Step 3: Cross multiply
    72,211.88x = 108,266.94 × 27,801.32
  4. Step 4: Simplify right side
    72,211.88x = 3,009,963,844.36
  5. Step 5: Solve for x
    x = 3,009,963,844.36/72,211.88
  6. Step 6: Final answer
    x = 41,682.39

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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.