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Finding the Fourth Proportional to 51,078.90, 70,488.69 and 29,853.90

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Solution

The fourth proportional to 51,078.90, 70,488.69 and 29,853.90 is: 41,198.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,078.90 : 70,488.69 = 29,853.90 : x
  2. Step 2: Convert to fraction form
    51,078.90/70,488.69 = 29,853.90/x
  3. Step 3: Cross multiply
    51,078.90x = 70,488.69 × 29,853.90
  4. Step 4: Simplify right side
    51,078.90x = 2,104,362,302.39
  5. Step 5: Solve for x
    x = 2,104,362,302.39/51,078.90
  6. Step 6: Final answer
    x = 41,198.27

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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.