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Finding the Fourth Proportional to 66,022.81, 91,150.95 and 43,399.67

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Solution

The fourth proportional to 66,022.81, 91,150.95 and 43,399.67 is: 59,917.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,022.81 : 91,150.95 = 43,399.67 : x
  2. Step 2: Convert to fraction form
    66,022.81/91,150.95 = 43,399.67/x
  3. Step 3: Cross multiply
    66,022.81x = 91,150.95 × 43,399.67
  4. Step 4: Simplify right side
    66,022.81x = 3,955,921,150.19
  5. Step 5: Solve for x
    x = 3,955,921,150.19/66,022.81
  6. Step 6: Final answer
    x = 59,917.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.