Home / 80,575.11-120,853.04-21,415.32

Finding the Fourth Proportional to 80,575.11, 120,853.04 and 21,415.32

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Solution

The fourth proportional to 80,575.11, 120,853.04 and 21,415.32 is: 32,120.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,575.11 : 120,853.04 = 21,415.32 : x
  2. Step 2: Convert to fraction form
    80,575.11/120,853.04 = 21,415.32/x
  3. Step 3: Cross multiply
    80,575.11x = 120,853.04 × 21,415.32
  4. Step 4: Simplify right side
    80,575.11x = 2,588,106,417.50
  5. Step 5: Solve for x
    x = 2,588,106,417.50/80,575.11
  6. Step 6: Final answer
    x = 32,120.42

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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.