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Finding the Fourth Proportional to 80,248.88, 120,328.29 and 54,976.94

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Solution

The fourth proportional to 80,248.88, 120,328.29 and 54,976.94 is: 82,434.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,248.88 : 120,328.29 = 54,976.94 : x
  2. Step 2: Convert to fraction form
    80,248.88/120,328.29 = 54,976.94/x
  3. Step 3: Cross multiply
    80,248.88x = 120,328.29 × 54,976.94
  4. Step 4: Simplify right side
    80,248.88x = 6,615,280,577.99
  5. Step 5: Solve for x
    x = 6,615,280,577.99/80,248.88
  6. Step 6: Final answer
    x = 82,434.56

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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.