Home / 81,028.43-121,555.60-34,281.71

Finding the Fourth Proportional to 81,028.43, 121,555.60 and 34,281.71

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Solution

The fourth proportional to 81,028.43, 121,555.60 and 34,281.71 is: 51,428.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,028.43 : 121,555.60 = 34,281.71 : x
  2. Step 2: Convert to fraction form
    81,028.43/121,555.60 = 34,281.71/x
  3. Step 3: Cross multiply
    81,028.43x = 121,555.60 × 34,281.71
  4. Step 4: Simplify right side
    81,028.43x = 4,167,133,048.89
  5. Step 5: Solve for x
    x = 4,167,133,048.89/81,028.43
  6. Step 6: Final answer
    x = 51,428.04

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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.