Home / 30,120.30-45,180.45-23,121.90

Finding the Fourth Proportional to 30,120.30, 45,180.45 and 23,121.90

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Solution

The fourth proportional to 30,120.30, 45,180.45 and 23,121.90 is: 34,682.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,120.30 : 45,180.45 = 23,121.90 : x
  2. Step 2: Convert to fraction form
    30,120.30/45,180.45 = 23,121.90/x
  3. Step 3: Cross multiply
    30,120.30x = 45,180.45 × 23,121.90
  4. Step 4: Simplify right side
    30,120.30x = 1,044,657,846.86
  5. Step 5: Solve for x
    x = 1,044,657,846.86/30,120.30
  6. Step 6: Final answer
    x = 34,682.85

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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.