Home / 57,211.57-78,923.90-49,647.28

Finding the Fourth Proportional to 57,211.57, 78,923.90 and 49,647.28

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Solution

The fourth proportional to 57,211.57, 78,923.90 and 49,647.28 is: 68,488.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,211.57 : 78,923.90 = 49,647.28 : x
  2. Step 2: Convert to fraction form
    57,211.57/78,923.90 = 49,647.28/x
  3. Step 3: Cross multiply
    57,211.57x = 78,923.90 × 49,647.28
  4. Step 4: Simplify right side
    57,211.57x = 3,918,356,567.37
  5. Step 5: Solve for x
    x = 3,918,356,567.37/57,211.57
  6. Step 6: Final answer
    x = 68,488.89

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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.