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Finding the Fourth Proportional to 34,405, 47,479.62 and 19,501

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Solution

The fourth proportional to 34,405, 47,479.62 and 19,501 is: 26,911.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,405 : 47,479.62 = 19,501 : x
  2. Step 2: Convert to fraction form
    34,405/47,479.62 = 19,501/x
  3. Step 3: Cross multiply
    34,405x = 47,479.62 × 19,501
  4. Step 4: Simplify right side
    34,405x = 925,900,069.62
  5. Step 5: Solve for x
    x = 925,900,069.62/34,405
  6. Step 6: Final answer
    x = 26,911.79

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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.