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Finding the Fourth Proportional to 77,388.03, 106,794.41 and 43,396.49

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Solution

The fourth proportional to 77,388.03, 106,794.41 and 43,396.49 is: 59,886.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,388.03 : 106,794.41 = 43,396.49 : x
  2. Step 2: Convert to fraction form
    77,388.03/106,794.41 = 43,396.49/x
  3. Step 3: Cross multiply
    77,388.03x = 106,794.41 × 43,396.49
  4. Step 4: Simplify right side
    77,388.03x = 4,634,502,595.62
  5. Step 5: Solve for x
    x = 4,634,502,595.62/77,388.03
  6. Step 6: Final answer
    x = 59,886.56

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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.