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Finding the Fourth Proportional to 37,479.54, 51,721.80 and 20,712.54

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Solution

The fourth proportional to 37,479.54, 51,721.80 and 20,712.54 is: 28,583.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,479.54 : 51,721.80 = 20,712.54 : x
  2. Step 2: Convert to fraction form
    37,479.54/51,721.80 = 20,712.54/x
  3. Step 3: Cross multiply
    37,479.54x = 51,721.80 × 20,712.54
  4. Step 4: Simplify right side
    37,479.54x = 1,071,289,851.37
  5. Step 5: Solve for x
    x = 1,071,289,851.37/37,479.54
  6. Step 6: Final answer
    x = 28,583.32

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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.