Home / 81,438.72-122,150.40-26,019.84

Finding the Fourth Proportional to 81,438.72, 122,150.40 and 26,019.84

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Solution

The fourth proportional to 81,438.72, 122,150.40 and 26,019.84 is: 39,027.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,438.72 : 122,150.40 = 26,019.84 : x
  2. Step 2: Convert to fraction form
    81,438.72/122,150.40 = 26,019.84/x
  3. Step 3: Cross multiply
    81,438.72x = 122,150.40 × 26,019.84
  4. Step 4: Simplify right side
    81,438.72x = 3,178,333,863.94
  5. Step 5: Solve for x
    x = 3,178,333,863.94/81,438.72
  6. Step 6: Final answer
    x = 39,027.31

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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.