Home / 81,395.28-122,091.75-49,381.98

Finding the Fourth Proportional to 81,395.28, 122,091.75 and 49,381.98

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Solution

The fourth proportional to 81,395.28, 122,091.75 and 49,381.98 is: 74,072.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,395.28 : 122,091.75 = 49,381.98 : x
  2. Step 2: Convert to fraction form
    81,395.28/122,091.75 = 49,381.98/x
  3. Step 3: Cross multiply
    81,395.28x = 122,091.75 × 49,381.98
  4. Step 4: Simplify right side
    81,395.28x = 6,029,132,356.67
  5. Step 5: Solve for x
    x = 6,029,132,356.67/81,395.28
  6. Step 6: Final answer
    x = 74,072.26

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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.