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Finding the Fourth Proportional to 68,290.99, 102,369.50 and 32,742.21

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Solution

The fourth proportional to 68,290.99, 102,369.50 and 32,742.21 is: 49,081.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,290.99 : 102,369.50 = 32,742.21 : x
  2. Step 2: Convert to fraction form
    68,290.99/102,369.50 = 32,742.21/x
  3. Step 3: Cross multiply
    68,290.99x = 102,369.50 × 32,742.21
  4. Step 4: Simplify right side
    68,290.99x = 3,351,803,666.60
  5. Step 5: Solve for x
    x = 3,351,803,666.60/68,290.99
  6. Step 6: Final answer
    x = 49,081.20

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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.