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Finding the Fourth Proportional to 34,786.88, 48,005.90 and 19,679.22

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Solution

The fourth proportional to 34,786.88, 48,005.90 and 19,679.22 is: 27,157.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,786.88 : 48,005.90 = 19,679.22 : x
  2. Step 2: Convert to fraction form
    34,786.88/48,005.90 = 19,679.22/x
  3. Step 3: Cross multiply
    34,786.88x = 48,005.90 × 19,679.22
  4. Step 4: Simplify right side
    34,786.88x = 944,718,328.97
  5. Step 5: Solve for x
    x = 944,718,328.97/34,786.88
  6. Step 6: Final answer
    x = 27,157.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.