Home / 74,505.36-111,758.04-21,915.30

Finding the Fourth Proportional to 74,505.36, 111,758.04 and 21,915.30

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Solution

The fourth proportional to 74,505.36, 111,758.04 and 21,915.30 is: 32,872.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,505.36 : 111,758.04 = 21,915.30 : x
  2. Step 2: Convert to fraction form
    74,505.36/111,758.04 = 21,915.30/x
  3. Step 3: Cross multiply
    74,505.36x = 111,758.04 × 21,915.30
  4. Step 4: Simplify right side
    74,505.36x = 2,449,210,974.01
  5. Step 5: Solve for x
    x = 2,449,210,974.01/74,505.36
  6. Step 6: Final answer
    x = 32,872.95

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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.