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Finding the Fourth Proportional to 38,485.60, 57,728.40 and 36,949.60

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Solution

The fourth proportional to 38,485.60, 57,728.40 and 36,949.60 is: 55,424.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,485.60 : 57,728.40 = 36,949.60 : x
  2. Step 2: Convert to fraction form
    38,485.60/57,728.40 = 36,949.60/x
  3. Step 3: Cross multiply
    38,485.60x = 57,728.40 × 36,949.60
  4. Step 4: Simplify right side
    38,485.60x = 2,133,041,288.64
  5. Step 5: Solve for x
    x = 2,133,041,288.64/38,485.60
  6. Step 6: Final answer
    x = 55,424.40

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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.