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Finding the Fourth Proportional to 53,321.64, 79,968.54 and 15,871.56

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Solution

The fourth proportional to 53,321.64, 79,968.54 and 15,871.56 is: 23,803.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,321.64 : 79,968.54 = 15,871.56 : x
  2. Step 2: Convert to fraction form
    53,321.64/79,968.54 = 15,871.56/x
  3. Step 3: Cross multiply
    53,321.64x = 79,968.54 × 15,871.56
  4. Step 4: Simplify right side
    53,321.64x = 1,269,225,480.72
  5. Step 5: Solve for x
    x = 1,269,225,480.72/53,321.64
  6. Step 6: Final answer
    x = 23,803.20

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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.