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Finding the Fourth Proportional to 44,504.64, 66,756 and 20,485.92

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Solution

The fourth proportional to 44,504.64, 66,756 and 20,485.92 is: 30,728.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,504.64 : 66,756 = 20,485.92 : x
  2. Step 2: Convert to fraction form
    44,504.64/66,756 = 20,485.92/x
  3. Step 3: Cross multiply
    44,504.64x = 66,756 × 20,485.92
  4. Step 4: Simplify right side
    44,504.64x = 1,367,558,075.52
  5. Step 5: Solve for x
    x = 1,367,558,075.52/44,504.64
  6. Step 6: Final answer
    x = 30,728.44

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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.