Home / 69,128.52-103,692.73-19,208.60

Finding the Fourth Proportional to 69,128.52, 103,692.73 and 19,208.60

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Solution

The fourth proportional to 69,128.52, 103,692.73 and 19,208.60 is: 28,812.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,128.52 : 103,692.73 = 19,208.60 : x
  2. Step 2: Convert to fraction form
    69,128.52/103,692.73 = 19,208.60/x
  3. Step 3: Cross multiply
    69,128.52x = 103,692.73 × 19,208.60
  4. Step 4: Simplify right side
    69,128.52x = 1,991,791,558.97
  5. Step 5: Solve for x
    x = 1,991,791,558.97/69,128.52
  6. Step 6: Final answer
    x = 28,812.88

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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.