Home / 43,872.12-65,791.80-15,784.56

Finding the Fourth Proportional to 43,872.12, 65,791.80 and 15,784.56

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Solution

The fourth proportional to 43,872.12, 65,791.80 and 15,784.56 is: 23,670.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,872.12 : 65,791.80 = 15,784.56 : x
  2. Step 2: Convert to fraction form
    43,872.12/65,791.80 = 15,784.56/x
  3. Step 3: Cross multiply
    43,872.12x = 65,791.80 × 15,784.56
  4. Step 4: Simplify right side
    43,872.12x = 1,038,494,614.61
  5. Step 5: Solve for x
    x = 1,038,494,614.61/43,872.12
  6. Step 6: Final answer
    x = 23,670.95

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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.