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Finding the Fourth Proportional to 57,340.60, 86,010.90 and 43,343.80

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Solution

The fourth proportional to 57,340.60, 86,010.90 and 43,343.80 is: 65,015.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,340.60 : 86,010.90 = 43,343.80 : x
  2. Step 2: Convert to fraction form
    57,340.60/86,010.90 = 43,343.80/x
  3. Step 3: Cross multiply
    57,340.60x = 86,010.90 × 43,343.80
  4. Step 4: Simplify right side
    57,340.60x = 3,728,039,247.42
  5. Step 5: Solve for x
    x = 3,728,039,247.42/57,340.60
  6. Step 6: Final answer
    x = 65,015.70

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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.