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Finding the Fourth Proportional to 66,613.37, 99,918.65 and 21,634.67

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Solution

The fourth proportional to 66,613.37, 99,918.65 and 21,634.67 is: 32,451.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,613.37 : 99,918.65 = 21,634.67 : x
  2. Step 2: Convert to fraction form
    66,613.37/99,918.65 = 21,634.67/x
  3. Step 3: Cross multiply
    66,613.37x = 99,918.65 × 21,634.67
  4. Step 4: Simplify right side
    66,613.37x = 2,161,707,323.48
  5. Step 5: Solve for x
    x = 2,161,707,323.48/66,613.37
  6. Step 6: Final answer
    x = 32,451.56

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1.5x scale

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.