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Finding the Fourth Proportional to 34,786.31, 48,005.12 and 19,678.65

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Solution

The fourth proportional to 34,786.31, 48,005.12 and 19,678.65 is: 27,156.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,786.31 : 48,005.12 = 19,678.65 : x
  2. Step 2: Convert to fraction form
    34,786.31/48,005.12 = 19,678.65/x
  3. Step 3: Cross multiply
    34,786.31x = 48,005.12 × 19,678.65
  4. Step 4: Simplify right side
    34,786.31x = 944,675,954.69
  5. Step 5: Solve for x
    x = 944,675,954.69/34,786.31
  6. Step 6: Final answer
    x = 27,156.54

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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.