Home / 81,437.21-122,155.85-22,268.40

Finding the Fourth Proportional to 81,437.21, 122,155.85 and 22,268.40

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Solution

The fourth proportional to 81,437.21, 122,155.85 and 22,268.40 is: 33,402.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,437.21 : 122,155.85 = 22,268.40 : x
  2. Step 2: Convert to fraction form
    81,437.21/122,155.85 = 22,268.40/x
  3. Step 3: Cross multiply
    81,437.21x = 122,155.85 × 22,268.40
  4. Step 4: Simplify right side
    81,437.21x = 2,720,215,330.14
  5. Step 5: Solve for x
    x = 2,720,215,330.14/81,437.21
  6. Step 6: Final answer
    x = 33,402.61

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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.