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Finding the Fourth Proportional to 69,643.60, 104,292.60 and 55,819.60

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Solution

The fourth proportional to 69,643.60, 104,292.60 and 55,819.60 is: 83,590.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,643.60 : 104,292.60 = 55,819.60 : x
  2. Step 2: Convert to fraction form
    69,643.60/104,292.60 = 55,819.60/x
  3. Step 3: Cross multiply
    69,643.60x = 104,292.60 × 55,819.60
  4. Step 4: Simplify right side
    69,643.60x = 5,821,571,214.96
  5. Step 5: Solve for x
    x = 5,821,571,214.96/69,643.60
  6. Step 6: Final answer
    x = 83,590.90

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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.