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Finding the Fourth Proportional to 110,564.80, 165,890.40 and 40,449.60

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Solution

The fourth proportional to 110,564.80, 165,890.40 and 40,449.60 is: 60,690.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,564.80 : 165,890.40 = 40,449.60 : x
  2. Step 2: Convert to fraction form
    110,564.80/165,890.40 = 40,449.60/x
  3. Step 3: Cross multiply
    110,564.80x = 165,890.40 × 40,449.60
  4. Step 4: Simplify right side
    110,564.80x = 6,710,200,323.84
  5. Step 5: Solve for x
    x = 6,710,200,323.84/110,564.80
  6. Step 6: Final answer
    x = 60,690.20

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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.