Home / 30,079.44-45,145.08-20,851.92

Finding the Fourth Proportional to 30,079.44, 45,145.08 and 20,851.92

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Solution

The fourth proportional to 30,079.44, 45,145.08 and 20,851.92 is: 31,295.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,079.44 : 45,145.08 = 20,851.92 : x
  2. Step 2: Convert to fraction form
    30,079.44/45,145.08 = 20,851.92/x
  3. Step 3: Cross multiply
    30,079.44x = 45,145.08 × 20,851.92
  4. Step 4: Simplify right side
    30,079.44x = 941,361,596.55
  5. Step 5: Solve for x
    x = 941,361,596.55/30,079.44
  6. Step 6: Final answer
    x = 31,295.85

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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.