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Finding the Fourth Proportional to 43,607.60, 65,265.60 and 30,485.60

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Solution

The fourth proportional to 43,607.60, 65,265.60 and 30,485.60 is: 45,626.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,607.60 : 65,265.60 = 30,485.60 : x
  2. Step 2: Convert to fraction form
    43,607.60/65,265.60 = 30,485.60/x
  3. Step 3: Cross multiply
    43,607.60x = 65,265.60 × 30,485.60
  4. Step 4: Simplify right side
    43,607.60x = 1,989,660,975.36
  5. Step 5: Solve for x
    x = 1,989,660,975.36/43,607.60
  6. Step 6: Final answer
    x = 45,626.47

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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.