Home / 70,812.14-106,181.64-20,885.90

Finding the Fourth Proportional to 70,812.14, 106,181.64 and 20,885.90

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Solution

The fourth proportional to 70,812.14, 106,181.64 and 20,885.90 is: 31,318.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,812.14 : 106,181.64 = 20,885.90 : x
  2. Step 2: Convert to fraction form
    70,812.14/106,181.64 = 20,885.90/x
  3. Step 3: Cross multiply
    70,812.14x = 106,181.64 × 20,885.90
  4. Step 4: Simplify right side
    70,812.14x = 2,217,699,114.88
  5. Step 5: Solve for x
    x = 2,217,699,114.88/70,812.14
  6. Step 6: Final answer
    x = 31,318.06

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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.