Home / 82,384.21-113,646.36-50,128.66

Finding the Fourth Proportional to 82,384.21, 113,646.36 and 50,128.66

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Solution

The fourth proportional to 82,384.21, 113,646.36 and 50,128.66 is: 69,150.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,384.21 : 113,646.36 = 50,128.66 : x
  2. Step 2: Convert to fraction form
    82,384.21/113,646.36 = 50,128.66/x
  3. Step 3: Cross multiply
    82,384.21x = 113,646.36 × 50,128.66
  4. Step 4: Simplify right side
    82,384.21x = 5,696,939,740.68
  5. Step 5: Solve for x
    x = 5,696,939,740.68/82,384.21
  6. Step 6: Final answer
    x = 69,150.87

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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.