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Finding the Fourth Proportional to 51,339.73, 77,009.54 and 19,324.78

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Solution

The fourth proportional to 51,339.73, 77,009.54 and 19,324.78 is: 28,987.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,339.73 : 77,009.54 = 19,324.78 : x
  2. Step 2: Convert to fraction form
    51,339.73/77,009.54 = 19,324.78/x
  3. Step 3: Cross multiply
    51,339.73x = 77,009.54 × 19,324.78
  4. Step 4: Simplify right side
    51,339.73x = 1,488,192,418.40
  5. Step 5: Solve for x
    x = 1,488,192,418.40/51,339.73
  6. Step 6: Final answer
    x = 28,987.15

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1.5x scale

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.