Home / 68,721.60-103,082.40-51,225.60

Finding the Fourth Proportional to 68,721.60, 103,082.40 and 51,225.60

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Solution

The fourth proportional to 68,721.60, 103,082.40 and 51,225.60 is: 76,838.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,721.60 : 103,082.40 = 51,225.60 : x
  2. Step 2: Convert to fraction form
    68,721.60/103,082.40 = 51,225.60/x
  3. Step 3: Cross multiply
    68,721.60x = 103,082.40 × 51,225.60
  4. Step 4: Simplify right side
    68,721.60x = 5,280,457,789.44
  5. Step 5: Solve for x
    x = 5,280,457,789.44/68,721.60
  6. Step 6: Final answer
    x = 76,838.40

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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.