Home / 55,428.71-76,491.29-31,229.60

Finding the Fourth Proportional to 55,428.71, 76,491.29 and 31,229.60

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Solution

The fourth proportional to 55,428.71, 76,491.29 and 31,229.60 is: 43,096.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,428.71 : 76,491.29 = 31,229.60 : x
  2. Step 2: Convert to fraction form
    55,428.71/76,491.29 = 31,229.60/x
  3. Step 3: Cross multiply
    55,428.71x = 76,491.29 × 31,229.60
  4. Step 4: Simplify right side
    55,428.71x = 2,388,792,340.40
  5. Step 5: Solve for x
    x = 2,388,792,340.40/55,428.71
  6. Step 6: Final answer
    x = 43,096.67

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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.