Home / 47,870.19-71,786.66-19,794.78

Finding the Fourth Proportional to 47,870.19, 71,786.66 and 19,794.78

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Solution

The fourth proportional to 47,870.19, 71,786.66 and 19,794.78 is: 29,684.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,870.19 : 71,786.66 = 19,794.78 : x
  2. Step 2: Convert to fraction form
    47,870.19/71,786.66 = 19,794.78/x
  3. Step 3: Cross multiply
    47,870.19x = 71,786.66 × 19,794.78
  4. Step 4: Simplify right side
    47,870.19x = 1,421,001,042.66
  5. Step 5: Solve for x
    x = 1,421,001,042.66/47,870.19
  6. Step 6: Final answer
    x = 29,684.47

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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.