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Finding the Fourth Proportional to 74,502.36, 111,753.54 and 21,912.30

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Solution

The fourth proportional to 74,502.36, 111,753.54 and 21,912.30 is: 32,868.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,502.36 : 111,753.54 = 21,912.30 : x
  2. Step 2: Convert to fraction form
    74,502.36/111,753.54 = 21,912.30/x
  3. Step 3: Cross multiply
    74,502.36x = 111,753.54 × 21,912.30
  4. Step 4: Simplify right side
    74,502.36x = 2,448,777,094.54
  5. Step 5: Solve for x
    x = 2,448,777,094.54/74,502.36
  6. Step 6: Final answer
    x = 32,868.45

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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.