Home / 43,120.56-64,680.85-11,955.81

Finding the Fourth Proportional to 43,120.56, 64,680.85 and 11,955.81

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Solution

The fourth proportional to 43,120.56, 64,680.85 and 11,955.81 is: 17,933.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,120.56 : 64,680.85 = 11,955.81 : x
  2. Step 2: Convert to fraction form
    43,120.56/64,680.85 = 11,955.81/x
  3. Step 3: Cross multiply
    43,120.56x = 64,680.85 × 11,955.81
  4. Step 4: Simplify right side
    43,120.56x = 773,311,953.24
  5. Step 5: Solve for x
    x = 773,311,953.24/43,120.56
  6. Step 6: Final answer
    x = 17,933.72

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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.