Home / 81,372.16-122,076.87-31,452.67

Finding the Fourth Proportional to 81,372.16, 122,076.87 and 31,452.67

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Solution

The fourth proportional to 81,372.16, 122,076.87 and 31,452.67 is: 47,186.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,372.16 : 122,076.87 = 31,452.67 : x
  2. Step 2: Convert to fraction form
    81,372.16/122,076.87 = 31,452.67/x
  3. Step 3: Cross multiply
    81,372.16x = 122,076.87 × 31,452.67
  4. Step 4: Simplify right side
    81,372.16x = 3,839,643,506.74
  5. Step 5: Solve for x
    x = 3,839,643,506.74/81,372.16
  6. Step 6: Final answer
    x = 47,186.21

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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.