Home / 66,120.81-91,246.43-35,905.88

Finding the Fourth Proportional to 66,120.81, 91,246.43 and 35,905.88

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Solution

The fourth proportional to 66,120.81, 91,246.43 and 35,905.88 is: 49,549.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,120.81 : 91,246.43 = 35,905.88 : x
  2. Step 2: Convert to fraction form
    66,120.81/91,246.43 = 35,905.88/x
  3. Step 3: Cross multiply
    66,120.81x = 91,246.43 × 35,905.88
  4. Step 4: Simplify right side
    66,120.81x = 3,276,283,683.89
  5. Step 5: Solve for x
    x = 3,276,283,683.89/66,120.81
  6. Step 6: Final answer
    x = 49,549.97

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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.