Home / 56,918.07-85,381.23-21,857.73

Finding the Fourth Proportional to 56,918.07, 85,381.23 and 21,857.73

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Solution

The fourth proportional to 56,918.07, 85,381.23 and 21,857.73 is: 32,788.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,918.07 : 85,381.23 = 21,857.73 : x
  2. Step 2: Convert to fraction form
    56,918.07/85,381.23 = 21,857.73/x
  3. Step 3: Cross multiply
    56,918.07x = 85,381.23 × 21,857.73
  4. Step 4: Simplify right side
    56,918.07x = 1,866,239,872.41
  5. Step 5: Solve for x
    x = 1,866,239,872.41/56,918.07
  6. Step 6: Final answer
    x = 32,788.18

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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.