Home / 68,458.16-102,693.62-18,538.67

Finding the Fourth Proportional to 68,458.16, 102,693.62 and 18,538.67

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Solution

The fourth proportional to 68,458.16, 102,693.62 and 18,538.67 is: 27,809.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,458.16 : 102,693.62 = 18,538.67 : x
  2. Step 2: Convert to fraction form
    68,458.16/102,693.62 = 18,538.67/x
  3. Step 3: Cross multiply
    68,458.16x = 102,693.62 × 18,538.67
  4. Step 4: Simplify right side
    68,458.16x = 1,903,803,435.37
  5. Step 5: Solve for x
    x = 1,903,803,435.37/68,458.16
  6. Step 6: Final answer
    x = 27,809.74

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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.