Home / 80,281.42-120,387.21-42,833.14

Finding the Fourth Proportional to 80,281.42, 120,387.21 and 42,833.14

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Solution

The fourth proportional to 80,281.42, 120,387.21 and 42,833.14 is: 64,231.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,281.42 : 120,387.21 = 42,833.14 : x
  2. Step 2: Convert to fraction form
    80,281.42/120,387.21 = 42,833.14/x
  3. Step 3: Cross multiply
    80,281.42x = 120,387.21 × 42,833.14
  4. Step 4: Simplify right side
    80,281.42x = 5,156,562,220.14
  5. Step 5: Solve for x
    x = 5,156,562,220.14/80,281.42
  6. Step 6: Final answer
    x = 64,231.08

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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.