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Finding the Fourth Proportional to 275,368.70, 413,063.16 and 75,704.72

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Solution

The fourth proportional to 275,368.70, 413,063.16 and 75,704.72 is: 113,559.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,368.70 : 413,063.16 = 75,704.72 : x
  2. Step 2: Convert to fraction form
    275,368.70/413,063.16 = 75,704.72/x
  3. Step 3: Cross multiply
    275,368.70x = 413,063.16 × 75,704.72
  4. Step 4: Simplify right side
    275,368.70x = 31,270,830,870.12
  5. Step 5: Solve for x
    x = 31,270,830,870.12/275,368.70
  6. Step 6: Final answer
    x = 113,559.86

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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.