Home / 68,769.50-102,688.64-54,570.12

Finding the Fourth Proportional to 68,769.50, 102,688.64 and 54,570.12

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Solution

The fourth proportional to 68,769.50, 102,688.64 and 54,570.12 is: 81,485.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,769.50 : 102,688.64 = 54,570.12 : x
  2. Step 2: Convert to fraction form
    68,769.50/102,688.64 = 54,570.12/x
  3. Step 3: Cross multiply
    68,769.50x = 102,688.64 × 54,570.12
  4. Step 4: Simplify right side
    68,769.50x = 5,603,731,134.59
  5. Step 5: Solve for x
    x = 5,603,731,134.59/68,769.50
  6. Step 6: Final answer
    x = 81,485.71

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.