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Finding the Fourth Proportional to 81,559.32, 122,256.32 and 55,266.72

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Solution

The fourth proportional to 81,559.32, 122,256.32 and 55,266.72 is: 82,844.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,559.32 : 122,256.32 = 55,266.72 : x
  2. Step 2: Convert to fraction form
    81,559.32/122,256.32 = 55,266.72/x
  3. Step 3: Cross multiply
    81,559.32x = 122,256.32 × 55,266.72
  4. Step 4: Simplify right side
    81,559.32x = 6,756,705,805.67
  5. Step 5: Solve for x
    x = 6,756,705,805.67/81,559.32
  6. Step 6: Final answer
    x = 82,844.07

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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.