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Finding the Fourth Proportional to 40,728.80, 61,093.20 and 35,544.80

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Solution

The fourth proportional to 40,728.80, 61,093.20 and 35,544.80 is: 53,317.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,728.80 : 61,093.20 = 35,544.80 : x
  2. Step 2: Convert to fraction form
    40,728.80/61,093.20 = 35,544.80/x
  3. Step 3: Cross multiply
    40,728.80x = 61,093.20 × 35,544.80
  4. Step 4: Simplify right side
    40,728.80x = 2,171,545,575.36
  5. Step 5: Solve for x
    x = 2,171,545,575.36/40,728.80
  6. Step 6: Final answer
    x = 53,317.20

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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.