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Finding the Fourth Proportional to 80,393.46, 120,579.02 and 56,304.79

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Solution

The fourth proportional to 80,393.46, 120,579.02 and 56,304.79 is: 84,449.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,393.46 : 120,579.02 = 56,304.79 : x
  2. Step 2: Convert to fraction form
    80,393.46/120,579.02 = 56,304.79/x
  3. Step 3: Cross multiply
    80,393.46x = 120,579.02 × 56,304.79
  4. Step 4: Simplify right side
    80,393.46x = 6,789,176,399.51
  5. Step 5: Solve for x
    x = 6,789,176,399.51/80,393.46
  6. Step 6: Final answer
    x = 84,449.36

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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.