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Finding the Fourth Proportional to 72,367.44, 99,866.52 and 40,536.60

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Solution

The fourth proportional to 72,367.44, 99,866.52 and 40,536.60 is: 55,940.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,367.44 : 99,866.52 = 40,536.60 : x
  2. Step 2: Convert to fraction form
    72,367.44/99,866.52 = 40,536.60/x
  3. Step 3: Cross multiply
    72,367.44x = 99,866.52 × 40,536.60
  4. Step 4: Simplify right side
    72,367.44x = 4,048,249,174.63
  5. Step 5: Solve for x
    x = 4,048,249,174.63/72,367.44
  6. Step 6: Final answer
    x = 55,940.20

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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.