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Finding the Fourth Proportional to 74,507.76, 111,777.30 and 21,912.84

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Solution

The fourth proportional to 74,507.76, 111,777.30 and 21,912.84 is: 32,873.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,507.76 : 111,777.30 = 21,912.84 : x
  2. Step 2: Convert to fraction form
    74,507.76/111,777.30 = 21,912.84/x
  3. Step 3: Cross multiply
    74,507.76x = 111,777.30 × 21,912.84
  4. Step 4: Simplify right side
    74,507.76x = 2,449,358,090.53
  5. Step 5: Solve for x
    x = 2,449,358,090.53/74,507.76
  6. Step 6: Final answer
    x = 32,873.87

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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.