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Finding the Fourth Proportional to 30,361.40, 45,542.10 and 28,514.60

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Solution

The fourth proportional to 30,361.40, 45,542.10 and 28,514.60 is: 42,771.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,361.40 : 45,542.10 = 28,514.60 : x
  2. Step 2: Convert to fraction form
    30,361.40/45,542.10 = 28,514.60/x
  3. Step 3: Cross multiply
    30,361.40x = 45,542.10 × 28,514.60
  4. Step 4: Simplify right side
    30,361.40x = 1,298,614,764.66
  5. Step 5: Solve for x
    x = 1,298,614,764.66/30,361.40
  6. Step 6: Final answer
    x = 42,771.90

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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.