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Finding the Fourth Proportional to 80,604.51, 120,969.74 and 55,818.30

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Solution

The fourth proportional to 80,604.51, 120,969.74 and 55,818.30 is: 83,771.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,604.51 : 120,969.74 = 55,818.30 : x
  2. Step 2: Convert to fraction form
    80,604.51/120,969.74 = 55,818.30/x
  3. Step 3: Cross multiply
    80,604.51x = 120,969.74 × 55,818.30
  4. Step 4: Simplify right side
    80,604.51x = 6,752,325,238.24
  5. Step 5: Solve for x
    x = 6,752,325,238.24/80,604.51
  6. Step 6: Final answer
    x = 83,771.06

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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.