Home / 82,117.63-122,864.40-50,105.38

Finding the Fourth Proportional to 82,117.63, 122,864.40 and 50,105.38

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Solution

The fourth proportional to 82,117.63, 122,864.40 and 50,105.38 is: 74,967.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,117.63 : 122,864.40 = 50,105.38 : x
  2. Step 2: Convert to fraction form
    82,117.63/122,864.40 = 50,105.38/x
  3. Step 3: Cross multiply
    82,117.63x = 122,864.40 × 50,105.38
  4. Step 4: Simplify right side
    82,117.63x = 6,156,167,450.47
  5. Step 5: Solve for x
    x = 6,156,167,450.47/82,117.63
  6. Step 6: Final answer
    x = 74,967.67

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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.