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Finding the Fourth Proportional to 56,918.80, 85,378.20 and 44,477.20

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Solution

The fourth proportional to 56,918.80, 85,378.20 and 44,477.20 is: 66,715.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,918.80 : 85,378.20 = 44,477.20 : x
  2. Step 2: Convert to fraction form
    56,918.80/85,378.20 = 44,477.20/x
  3. Step 3: Cross multiply
    56,918.80x = 85,378.20 × 44,477.20
  4. Step 4: Simplify right side
    56,918.80x = 3,797,383,277.04
  5. Step 5: Solve for x
    x = 3,797,383,277.04/56,918.80
  6. Step 6: Final answer
    x = 66,715.80

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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.