Home / 68,205.16-102,313.73-20,830.94

Finding the Fourth Proportional to 68,205.16, 102,313.73 and 20,830.94

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Solution

The fourth proportional to 68,205.16, 102,313.73 and 20,830.94 is: 31,248.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,205.16 : 102,313.73 = 20,830.94 : x
  2. Step 2: Convert to fraction form
    68,205.16/102,313.73 = 20,830.94/x
  3. Step 3: Cross multiply
    68,205.16x = 102,313.73 × 20,830.94
  4. Step 4: Simplify right side
    68,205.16x = 2,131,291,094.99
  5. Step 5: Solve for x
    x = 2,131,291,094.99/68,205.16
  6. Step 6: Final answer
    x = 31,248.24

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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.