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Finding the Fourth Proportional to 72,536.48, 100,074.67 and 47,400.56

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Solution

The fourth proportional to 72,536.48, 100,074.67 and 47,400.56 is: 65,395.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,536.48 : 100,074.67 = 47,400.56 : x
  2. Step 2: Convert to fraction form
    72,536.48/100,074.67 = 47,400.56/x
  3. Step 3: Cross multiply
    72,536.48x = 100,074.67 × 47,400.56
  4. Step 4: Simplify right side
    72,536.48x = 4,743,594,899.44
  5. Step 5: Solve for x
    x = 4,743,594,899.44/72,536.48
  6. Step 6: Final answer
    x = 65,395.99

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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.