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Finding the Fourth Proportional to 70,139.84, 105,209.99 and 17,549.33

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Solution

The fourth proportional to 70,139.84, 105,209.99 and 17,549.33 is: 26,324.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,139.84 : 105,209.99 = 17,549.33 : x
  2. Step 2: Convert to fraction form
    70,139.84/105,209.99 = 17,549.33/x
  3. Step 3: Cross multiply
    70,139.84x = 105,209.99 × 17,549.33
  4. Step 4: Simplify right side
    70,139.84x = 1,846,364,220.01
  5. Step 5: Solve for x
    x = 1,846,364,220.01/70,139.84
  6. Step 6: Final answer
    x = 26,324.04

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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.