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Finding the Fourth Proportional to 79,356.84, 119,037.72 and 39,915.54

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Solution

The fourth proportional to 79,356.84, 119,037.72 and 39,915.54 is: 59,874.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,356.84 : 119,037.72 = 39,915.54 : x
  2. Step 2: Convert to fraction form
    79,356.84/119,037.72 = 39,915.54/x
  3. Step 3: Cross multiply
    79,356.84x = 119,037.72 × 39,915.54
  4. Step 4: Simplify right side
    79,356.84x = 4,751,454,874.17
  5. Step 5: Solve for x
    x = 4,751,454,874.17/79,356.84
  6. Step 6: Final answer
    x = 59,874.55

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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.