Home / 71,708.04-107,576.58-30,155

Finding the Fourth Proportional to 71,708.04, 107,576.58 and 30,155

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Solution

The fourth proportional to 71,708.04, 107,576.58 and 30,155 is: 45,238.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,708.04 : 107,576.58 = 30,155 : x
  2. Step 2: Convert to fraction form
    71,708.04/107,576.58 = 30,155/x
  3. Step 3: Cross multiply
    71,708.04x = 107,576.58 × 30,155
  4. Step 4: Simplify right side
    71,708.04x = 3,243,971,769.90
  5. Step 5: Solve for x
    x = 3,243,971,769.90/71,708.04
  6. Step 6: Final answer
    x = 45,238.61

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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.