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Finding the Fourth Proportional to 38,245.40, 57,368.10 and 28,914.20

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Solution

The fourth proportional to 38,245.40, 57,368.10 and 28,914.20 is: 43,371.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,245.40 : 57,368.10 = 28,914.20 : x
  2. Step 2: Convert to fraction form
    38,245.40/57,368.10 = 28,914.20/x
  3. Step 3: Cross multiply
    38,245.40x = 57,368.10 × 28,914.20
  4. Step 4: Simplify right side
    38,245.40x = 1,658,752,717.02
  5. Step 5: Solve for x
    x = 1,658,752,717.02/38,245.40
  6. Step 6: Final answer
    x = 43,371.30

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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.