Home / 69,890.64-104,852.16-19,971.42

Finding the Fourth Proportional to 69,890.64, 104,852.16 and 19,971.42

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Solution

The fourth proportional to 69,890.64, 104,852.16 and 19,971.42 is: 29,961.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,890.64 : 104,852.16 = 19,971.42 : x
  2. Step 2: Convert to fraction form
    69,890.64/104,852.16 = 19,971.42/x
  3. Step 3: Cross multiply
    69,890.64x = 104,852.16 × 19,971.42
  4. Step 4: Simplify right side
    69,890.64x = 2,094,046,525.27
  5. Step 5: Solve for x
    x = 2,094,046,525.27/69,890.64
  6. Step 6: Final answer
    x = 29,961.76

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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.