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Finding the Fourth Proportional to 70,453.42, 105,698.52 and 20,532.46

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Solution

The fourth proportional to 70,453.42, 105,698.52 and 20,532.46 is: 30,804.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,453.42 : 105,698.52 = 20,532.46 : x
  2. Step 2: Convert to fraction form
    70,453.42/105,698.52 = 20,532.46/x
  3. Step 3: Cross multiply
    70,453.42x = 105,698.52 × 20,532.46
  4. Step 4: Simplify right side
    70,453.42x = 2,170,250,633.96
  5. Step 5: Solve for x
    x = 2,170,250,633.96/70,453.42
  6. Step 6: Final answer
    x = 30,804.05

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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.