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Finding the Fourth Proportional to 30,874.40, 46,311.20 and 7,500.77

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Solution

The fourth proportional to 30,874.40, 46,311.20 and 7,500.77 is: 11,251.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,874.40 : 46,311.20 = 7,500.77 : x
  2. Step 2: Convert to fraction form
    30,874.40/46,311.20 = 7,500.77/x
  3. Step 3: Cross multiply
    30,874.40x = 46,311.20 × 7,500.77
  4. Step 4: Simplify right side
    30,874.40x = 347,369,622.12
  5. Step 5: Solve for x
    x = 347,369,622.12/30,874.40
  6. Step 6: Final answer
    x = 11,251.06

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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.