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Finding the Fourth Proportional to 38,455.70, 57,683.55 and 36,782.90

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Solution

The fourth proportional to 38,455.70, 57,683.55 and 36,782.90 is: 55,174.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,455.70 : 57,683.55 = 36,782.90 : x
  2. Step 2: Convert to fraction form
    38,455.70/57,683.55 = 36,782.90/x
  3. Step 3: Cross multiply
    38,455.70x = 57,683.55 × 36,782.90
  4. Step 4: Simplify right side
    38,455.70x = 2,121,768,251.30
  5. Step 5: Solve for x
    x = 2,121,768,251.30/38,455.70
  6. Step 6: Final answer
    x = 55,174.35

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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.