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Finding the Fourth Proportional to 53,163.37, 79,742.40 and 19,880.98

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Solution

The fourth proportional to 53,163.37, 79,742.40 and 19,880.98 is: 29,820.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,163.37 : 79,742.40 = 19,880.98 : x
  2. Step 2: Convert to fraction form
    53,163.37/79,742.40 = 19,880.98/x
  3. Step 3: Cross multiply
    53,163.37x = 79,742.40 × 19,880.98
  4. Step 4: Simplify right side
    53,163.37x = 1,585,357,271.47
  5. Step 5: Solve for x
    x = 1,585,357,271.47/53,163.37
  6. Step 6: Final answer
    x = 29,820.48

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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.