Home / 69,872.50-96,431.34-39,665.98

Finding the Fourth Proportional to 69,872.50, 96,431.34 and 39,665.98

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Solution

The fourth proportional to 69,872.50, 96,431.34 and 39,665.98 is: 54,743.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,872.50 : 96,431.34 = 39,665.98 : x
  2. Step 2: Convert to fraction form
    69,872.50/96,431.34 = 39,665.98/x
  3. Step 3: Cross multiply
    69,872.50x = 96,431.34 × 39,665.98
  4. Step 4: Simplify right side
    69,872.50x = 3,825,043,603.81
  5. Step 5: Solve for x
    x = 3,825,043,603.81/69,872.50
  6. Step 6: Final answer
    x = 54,743.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.