Home / 80,012.16-120,016.80-27,421.92

Finding the Fourth Proportional to 80,012.16, 120,016.80 and 27,421.92

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Solution

The fourth proportional to 80,012.16, 120,016.80 and 27,421.92 is: 41,132.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,012.16 : 120,016.80 = 27,421.92 : x
  2. Step 2: Convert to fraction form
    80,012.16/120,016.80 = 27,421.92/x
  3. Step 3: Cross multiply
    80,012.16x = 120,016.80 × 27,421.92
  4. Step 4: Simplify right side
    80,012.16x = 3,291,091,088.26
  5. Step 5: Solve for x
    x = 3,291,091,088.26/80,012.16
  6. Step 6: Final answer
    x = 41,132.39

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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.