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Finding the Fourth Proportional to 71,613.45, 107,425.64 and 21,697.68

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Solution

The fourth proportional to 71,613.45, 107,425.64 and 21,697.68 is: 32,548.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,613.45 : 107,425.64 = 21,697.68 : x
  2. Step 2: Convert to fraction form
    71,613.45/107,425.64 = 21,697.68/x
  3. Step 3: Cross multiply
    71,613.45x = 107,425.64 × 21,697.68
  4. Step 4: Simplify right side
    71,613.45x = 2,330,887,052.03
  5. Step 5: Solve for x
    x = 2,330,887,052.03/71,613.45
  6. Step 6: Final answer
    x = 32,548.17

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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.