Home / 70,899.56-106,370.20-20,981.00

Finding the Fourth Proportional to 70,899.56, 106,370.20 and 20,981.00

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Solution

The fourth proportional to 70,899.56, 106,370.20 and 20,981.00 is: 31,477.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,899.56 : 106,370.20 = 20,981.00 : x
  2. Step 2: Convert to fraction form
    70,899.56/106,370.20 = 20,981.00/x
  3. Step 3: Cross multiply
    70,899.56x = 106,370.20 × 20,981.00
  4. Step 4: Simplify right side
    70,899.56x = 2,231,752,634.35
  5. Step 5: Solve for x
    x = 2,231,752,634.35/70,899.56
  6. Step 6: Final answer
    x = 31,477.67

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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.