Home / 80,111.03-120,165.77-56,320.43

Finding the Fourth Proportional to 80,111.03, 120,165.77 and 56,320.43

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Solution

The fourth proportional to 80,111.03, 120,165.77 and 56,320.43 is: 84,480.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,111.03 : 120,165.77 = 56,320.43 : x
  2. Step 2: Convert to fraction form
    80,111.03/120,165.77 = 56,320.43/x
  3. Step 3: Cross multiply
    80,111.03x = 120,165.77 × 56,320.43
  4. Step 4: Simplify right side
    80,111.03x = 6,767,787,556.08
  5. Step 5: Solve for x
    x = 6,767,787,556.08/80,111.03
  6. Step 6: Final answer
    x = 84,480.10

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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.