Home / 89,408.21-123,332.01-55,815.89

Finding the Fourth Proportional to 89,408.21, 123,332.01 and 55,815.89

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Solution

The fourth proportional to 89,408.21, 123,332.01 and 55,815.89 is: 76,993.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,408.21 : 123,332.01 = 55,815.89 : x
  2. Step 2: Convert to fraction form
    89,408.21/123,332.01 = 55,815.89/x
  3. Step 3: Cross multiply
    89,408.21x = 123,332.01 × 55,815.89
  4. Step 4: Simplify right side
    89,408.21x = 6,883,885,771.41
  5. Step 5: Solve for x
    x = 6,883,885,771.41/89,408.21
  6. Step 6: Final answer
    x = 76,993.89

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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.