Home / 80,303.11-120,407.96-30,387.06

Finding the Fourth Proportional to 80,303.11, 120,407.96 and 30,387.06

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Solution

The fourth proportional to 80,303.11, 120,407.96 and 30,387.06 is: 45,562.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,303.11 : 120,407.96 = 30,387.06 : x
  2. Step 2: Convert to fraction form
    80,303.11/120,407.96 = 30,387.06/x
  3. Step 3: Cross multiply
    80,303.11x = 120,407.96 × 30,387.06
  4. Step 4: Simplify right side
    80,303.11x = 3,658,843,302.96
  5. Step 5: Solve for x
    x = 3,658,843,302.96/80,303.11
  6. Step 6: Final answer
    x = 45,562.91

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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.