Home / 81,810.48-122,535.84-67,609.56

Finding the Fourth Proportional to 81,810.48, 122,535.84 and 67,609.56

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Solution

The fourth proportional to 81,810.48, 122,535.84 and 67,609.56 is: 101,265.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,810.48 : 122,535.84 = 67,609.56 : x
  2. Step 2: Convert to fraction form
    81,810.48/122,535.84 = 67,609.56/x
  3. Step 3: Cross multiply
    81,810.48x = 122,535.84 × 67,609.56
  4. Step 4: Simplify right side
    81,810.48x = 8,284,594,226.63
  5. Step 5: Solve for x
    x = 8,284,594,226.63/81,810.48
  6. Step 6: Final answer
    x = 101,265.68

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1.5x scale

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.