Home / 81,601.48-122,389.26-31,704.40

Finding the Fourth Proportional to 81,601.48, 122,389.26 and 31,704.40

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Solution

The fourth proportional to 81,601.48, 122,389.26 and 31,704.40 is: 47,551.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,601.48 : 122,389.26 = 31,704.40 : x
  2. Step 2: Convert to fraction form
    81,601.48/122,389.26 = 31,704.40/x
  3. Step 3: Cross multiply
    81,601.48x = 122,389.26 × 31,704.40
  4. Step 4: Simplify right side
    81,601.48x = 3,880,278,054.74
  5. Step 5: Solve for x
    x = 3,880,278,054.74/81,601.48
  6. Step 6: Final answer
    x = 47,551.56

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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.