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Finding the Fourth Proportional to 79,271.60, 118,907.40 and 41,817.20

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Solution

The fourth proportional to 79,271.60, 118,907.40 and 41,817.20 is: 62,725.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,271.60 : 118,907.40 = 41,817.20 : x
  2. Step 2: Convert to fraction form
    79,271.60/118,907.40 = 41,817.20/x
  3. Step 3: Cross multiply
    79,271.60x = 118,907.40 × 41,817.20
  4. Step 4: Simplify right side
    79,271.60x = 4,972,374,527.28
  5. Step 5: Solve for x
    x = 4,972,374,527.28/79,271.60
  6. Step 6: Final answer
    x = 62,725.80

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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.