Home / 74,013.84-111,038.99-21,428.64

Finding the Fourth Proportional to 74,013.84, 111,038.99 and 21,428.64

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Solution

The fourth proportional to 74,013.84, 111,038.99 and 21,428.64 is: 32,148.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,013.84 : 111,038.99 = 21,428.64 : x
  2. Step 2: Convert to fraction form
    74,013.84/111,038.99 = 21,428.64/x
  3. Step 3: Cross multiply
    74,013.84x = 111,038.99 × 21,428.64
  4. Step 4: Simplify right side
    74,013.84x = 2,379,414,435.53
  5. Step 5: Solve for x
    x = 2,379,414,435.53/74,013.84
  6. Step 6: Final answer
    x = 32,148.24

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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.