Home / 89,087.40-122,839.70-56,778.80

Finding the Fourth Proportional to 89,087.40, 122,839.70 and 56,778.80

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Solution

The fourth proportional to 89,087.40, 122,839.70 and 56,778.80 is: 78,290.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,087.40 : 122,839.70 = 56,778.80 : x
  2. Step 2: Convert to fraction form
    89,087.40/122,839.70 = 56,778.80/x
  3. Step 3: Cross multiply
    89,087.40x = 122,839.70 × 56,778.80
  4. Step 4: Simplify right side
    89,087.40x = 6,974,689,860.27
  5. Step 5: Solve for x
    x = 6,974,689,860.27/89,087.40
  6. Step 6: Final answer
    x = 78,290.42

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.