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Finding the Fourth Proportional to 70,160.58, 105,241.68 and 20,241.63

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Solution

The fourth proportional to 70,160.58, 105,241.68 and 20,241.63 is: 30,362.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,160.58 : 105,241.68 = 20,241.63 : x
  2. Step 2: Convert to fraction form
    70,160.58/105,241.68 = 20,241.63/x
  3. Step 3: Cross multiply
    70,160.58x = 105,241.68 × 20,241.63
  4. Step 4: Simplify right side
    70,160.58x = 2,130,263,147.14
  5. Step 5: Solve for x
    x = 2,130,263,147.14/70,160.58
  6. Step 6: Final answer
    x = 30,362.68

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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.