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Finding the Fourth Proportional to 43,608.20, 65,412.30 and 37,905.80

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Solution

The fourth proportional to 43,608.20, 65,412.30 and 37,905.80 is: 56,858.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,608.20 : 65,412.30 = 37,905.80 : x
  2. Step 2: Convert to fraction form
    43,608.20/65,412.30 = 37,905.80/x
  3. Step 3: Cross multiply
    43,608.20x = 65,412.30 × 37,905.80
  4. Step 4: Simplify right side
    43,608.20x = 2,479,505,561.34
  5. Step 5: Solve for x
    x = 2,479,505,561.34/43,608.20
  6. Step 6: Final answer
    x = 56,858.70

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1.5x scale

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.