Home / 69,840.84-104,743.90-19,921.37

Finding the Fourth Proportional to 69,840.84, 104,743.90 and 19,921.37

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Solution

The fourth proportional to 69,840.84, 104,743.90 and 19,921.37 is: 29,877.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,840.84 : 104,743.90 = 19,921.37 : x
  2. Step 2: Convert to fraction form
    69,840.84/104,743.90 = 19,921.37/x
  3. Step 3: Cross multiply
    69,840.84x = 104,743.90 × 19,921.37
  4. Step 4: Simplify right side
    69,840.84x = 2,086,641,463.42
  5. Step 5: Solve for x
    x = 2,086,641,463.42/69,840.84
  6. Step 6: Final answer
    x = 29,877.10

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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.