Home / 80,779.44-121,168.08-28,188.66

Finding the Fourth Proportional to 80,779.44, 121,168.08 and 28,188.66

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Solution

The fourth proportional to 80,779.44, 121,168.08 and 28,188.66 is: 42,282.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,779.44 : 121,168.08 = 28,188.66 : x
  2. Step 2: Convert to fraction form
    80,779.44/121,168.08 = 28,188.66/x
  3. Step 3: Cross multiply
    80,779.44x = 121,168.08 × 28,188.66
  4. Step 4: Simplify right side
    80,779.44x = 3,415,565,809.97
  5. Step 5: Solve for x
    x = 3,415,565,809.97/80,779.44
  6. Step 6: Final answer
    x = 42,282.61

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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.