Home / 55,756-76,943.32-30,607.12

Finding the Fourth Proportional to 55,756, 76,943.32 and 30,607.12

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Solution

The fourth proportional to 55,756, 76,943.32 and 30,607.12 is: 42,237.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,756 : 76,943.32 = 30,607.12 : x
  2. Step 2: Convert to fraction form
    55,756/76,943.32 = 30,607.12/x
  3. Step 3: Cross multiply
    55,756x = 76,943.32 × 30,607.12
  4. Step 4: Simplify right side
    55,756x = 2,355,013,428.44
  5. Step 5: Solve for x
    x = 2,355,013,428.44/55,756
  6. Step 6: Final answer
    x = 42,237.85

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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.