Home / 68,420.86-102,631.26-49,819.26

Finding the Fourth Proportional to 68,420.86, 102,631.26 and 49,819.26

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Solution

The fourth proportional to 68,420.86, 102,631.26 and 49,819.26 is: 74,728.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,420.86 : 102,631.26 = 49,819.26 : x
  2. Step 2: Convert to fraction form
    68,420.86/102,631.26 = 49,819.26/x
  3. Step 3: Cross multiply
    68,420.86x = 102,631.26 × 49,819.26
  4. Step 4: Simplify right side
    68,420.86x = 5,113,013,426.07
  5. Step 5: Solve for x
    x = 5,113,013,426.07/68,420.86
  6. Step 6: Final answer
    x = 74,728.87

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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.