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Finding the Fourth Proportional to 30,324, 41,851.44 and 28,995.60

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Solution

The fourth proportional to 30,324, 41,851.44 and 28,995.60 is: 40,018.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,324 : 41,851.44 = 28,995.60 : x
  2. Step 2: Convert to fraction form
    30,324/41,851.44 = 28,995.60/x
  3. Step 3: Cross multiply
    30,324x = 41,851.44 × 28,995.60
  4. Step 4: Simplify right side
    30,324x = 1,213,507,613.66
  5. Step 5: Solve for x
    x = 1,213,507,613.66/30,324
  6. Step 6: Final answer
    x = 40,018.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.