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Finding the Fourth Proportional to 43,751.20, 65,583.60 and 17,420.80

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Solution

The fourth proportional to 43,751.20, 65,583.60 and 17,420.80 is: 26,114.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,751.20 : 65,583.60 = 17,420.80 : x
  2. Step 2: Convert to fraction form
    43,751.20/65,583.60 = 17,420.80/x
  3. Step 3: Cross multiply
    43,751.20x = 65,583.60 × 17,420.80
  4. Step 4: Simplify right side
    43,751.20x = 1,142,518,778.88
  5. Step 5: Solve for x
    x = 1,142,518,778.88/43,751.20
  6. Step 6: Final answer
    x = 26,114.00

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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.