Home / 51,993.50-77,981.67-18,707.36

Finding the Fourth Proportional to 51,993.50, 77,981.67 and 18,707.36

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Solution

The fourth proportional to 51,993.50, 77,981.67 and 18,707.36 is: 28,057.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,993.50 : 77,981.67 = 18,707.36 : x
  2. Step 2: Convert to fraction form
    51,993.50/77,981.67 = 18,707.36/x
  3. Step 3: Cross multiply
    51,993.50x = 77,981.67 × 18,707.36
  4. Step 4: Simplify right side
    51,993.50x = 1,458,831,174.09
  5. Step 5: Solve for x
    x = 1,458,831,174.09/51,993.50
  6. Step 6: Final answer
    x = 28,057.95

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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.