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Finding the Fourth Proportional to 40,287.30, 60,393.90 and 21,580.14

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Solution

The fourth proportional to 40,287.30, 60,393.90 and 21,580.14 is: 32,350.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,287.30 : 60,393.90 = 21,580.14 : x
  2. Step 2: Convert to fraction form
    40,287.30/60,393.90 = 21,580.14/x
  3. Step 3: Cross multiply
    40,287.30x = 60,393.90 × 21,580.14
  4. Step 4: Simplify right side
    40,287.30x = 1,303,308,817.15
  5. Step 5: Solve for x
    x = 1,303,308,817.15/40,287.30
  6. Step 6: Final answer
    x = 32,350.36

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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.