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Finding the Fourth Proportional to 60,246.99, 90,388.71 and 20,808.09

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Solution

The fourth proportional to 60,246.99, 90,388.71 and 20,808.09 is: 31,218.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,246.99 : 90,388.71 = 20,808.09 : x
  2. Step 2: Convert to fraction form
    60,246.99/90,388.71 = 20,808.09/x
  3. Step 3: Cross multiply
    60,246.99x = 90,388.71 × 20,808.09
  4. Step 4: Simplify right side
    60,246.99x = 1,880,816,412.66
  5. Step 5: Solve for x
    x = 1,880,816,412.66/60,246.99
  6. Step 6: Final answer
    x = 31,218.43

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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.