Home / 79,744.32-119,616.63-74,872.80

Finding the Fourth Proportional to 79,744.32, 119,616.63 and 74,872.80

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Solution

The fourth proportional to 79,744.32, 119,616.63 and 74,872.80 is: 112,309.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,744.32 : 119,616.63 = 74,872.80 : x
  2. Step 2: Convert to fraction form
    79,744.32/119,616.63 = 74,872.80/x
  3. Step 3: Cross multiply
    79,744.32x = 119,616.63 × 74,872.80
  4. Step 4: Simplify right side
    79,744.32x = 8,956,032,014.66
  5. Step 5: Solve for x
    x = 8,956,032,014.66/79,744.32
  6. Step 6: Final answer
    x = 112,309.34

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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.