Home / 68,877.81-103,303.02-18,945

Finding the Fourth Proportional to 68,877.81, 103,303.02 and 18,945

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Solution

The fourth proportional to 68,877.81, 103,303.02 and 18,945 is: 28,413.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,877.81 : 103,303.02 = 18,945 : x
  2. Step 2: Convert to fraction form
    68,877.81/103,303.02 = 18,945/x
  3. Step 3: Cross multiply
    68,877.81x = 103,303.02 × 18,945
  4. Step 4: Simplify right side
    68,877.81x = 1,957,075,713.90
  5. Step 5: Solve for x
    x = 1,957,075,713.90/68,877.81
  6. Step 6: Final answer
    x = 28,413.73

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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.