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Finding the Fourth Proportional to 40,057.32, 60,094.60 and 11,979.60

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Solution

The fourth proportional to 40,057.32, 60,094.60 and 11,979.60 is: 17,971.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,057.32 : 60,094.60 = 11,979.60 : x
  2. Step 2: Convert to fraction form
    40,057.32/60,094.60 = 11,979.60/x
  3. Step 3: Cross multiply
    40,057.32x = 60,094.60 × 11,979.60
  4. Step 4: Simplify right side
    40,057.32x = 719,909,270.16
  5. Step 5: Solve for x
    x = 719,909,270.16/40,057.32
  6. Step 6: Final answer
    x = 17,971.98

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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.