Home / 74,915.81-112,378.04-28,169.09

Finding the Fourth Proportional to 74,915.81, 112,378.04 and 28,169.09

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Solution

The fourth proportional to 74,915.81, 112,378.04 and 28,169.09 is: 42,255.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,915.81 : 112,378.04 = 28,169.09 : x
  2. Step 2: Convert to fraction form
    74,915.81/112,378.04 = 28,169.09/x
  3. Step 3: Cross multiply
    74,915.81x = 112,378.04 × 28,169.09
  4. Step 4: Simplify right side
    74,915.81x = 3,165,586,981.94
  5. Step 5: Solve for x
    x = 3,165,586,981.94/74,915.81
  6. Step 6: Final answer
    x = 42,255.26

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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.