Home / 70,899.12-106,365.66-20,298.85

Finding the Fourth Proportional to 70,899.12, 106,365.66 and 20,298.85

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Solution

The fourth proportional to 70,899.12, 106,365.66 and 20,298.85 is: 30,453.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,899.12 : 106,365.66 = 20,298.85 : x
  2. Step 2: Convert to fraction form
    70,899.12/106,365.66 = 20,298.85/x
  3. Step 3: Cross multiply
    70,899.12x = 106,365.66 × 20,298.85
  4. Step 4: Simplify right side
    70,899.12x = 2,159,100,833.76
  5. Step 5: Solve for x
    x = 2,159,100,833.76/70,899.12
  6. Step 6: Final answer
    x = 30,453.14

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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.