Home / 81,675.42-122,455.53-31,713.90

Finding the Fourth Proportional to 81,675.42, 122,455.53 and 31,713.90

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Solution

The fourth proportional to 81,675.42, 122,455.53 and 31,713.90 is: 47,548.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,675.42 : 122,455.53 = 31,713.90 : x
  2. Step 2: Convert to fraction form
    81,675.42/122,455.53 = 31,713.90/x
  3. Step 3: Cross multiply
    81,675.42x = 122,455.53 × 31,713.90
  4. Step 4: Simplify right side
    81,675.42x = 3,883,542,432.87
  5. Step 5: Solve for x
    x = 3,883,542,432.87/81,675.42
  6. Step 6: Final answer
    x = 47,548.48

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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.