Home / 74,769.21-103,175.78-42,948.36

Finding the Fourth Proportional to 74,769.21, 103,175.78 and 42,948.36

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Solution

The fourth proportional to 74,769.21, 103,175.78 and 42,948.36 is: 59,265.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,769.21 : 103,175.78 = 42,948.36 : x
  2. Step 2: Convert to fraction form
    74,769.21/103,175.78 = 42,948.36/x
  3. Step 3: Cross multiply
    74,769.21x = 103,175.78 × 42,948.36
  4. Step 4: Simplify right side
    74,769.21x = 4,431,230,327.98
  5. Step 5: Solve for x
    x = 4,431,230,327.98/74,769.21
  6. Step 6: Final answer
    x = 59,265.44

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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.