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Finding the Fourth Proportional to 70,468.00, 105,690.74 and 20,536.42

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Solution

The fourth proportional to 70,468.00, 105,690.74 and 20,536.42 is: 30,801.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,468.00 : 105,690.74 = 20,536.42 : x
  2. Step 2: Convert to fraction form
    70,468.00/105,690.74 = 20,536.42/x
  3. Step 3: Cross multiply
    70,468.00x = 105,690.74 × 20,536.42
  4. Step 4: Simplify right side
    70,468.00x = 2,170,509,213.86
  5. Step 5: Solve for x
    x = 2,170,509,213.86/70,468.00
  6. Step 6: Final answer
    x = 30,801.35

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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.