Home / 68,554.20-102,793.08-21,155.85

Finding the Fourth Proportional to 68,554.20, 102,793.08 and 21,155.85

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Solution

The fourth proportional to 68,554.20, 102,793.08 and 21,155.85 is: 31,721.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,554.20 : 102,793.08 = 21,155.85 : x
  2. Step 2: Convert to fraction form
    68,554.20/102,793.08 = 21,155.85/x
  3. Step 3: Cross multiply
    68,554.20x = 102,793.08 × 21,155.85
  4. Step 4: Simplify right side
    68,554.20x = 2,174,674,981.52
  5. Step 5: Solve for x
    x = 2,174,674,981.52/68,554.20
  6. Step 6: Final answer
    x = 31,721.98

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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.