Home / 68,143.53-102,159.40-30,692.37

Finding the Fourth Proportional to 68,143.53, 102,159.40 and 30,692.37

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Solution

The fourth proportional to 68,143.53, 102,159.40 and 30,692.37 is: 46,013.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,143.53 : 102,159.40 = 30,692.37 : x
  2. Step 2: Convert to fraction form
    68,143.53/102,159.40 = 30,692.37/x
  3. Step 3: Cross multiply
    68,143.53x = 102,159.40 × 30,692.37
  4. Step 4: Simplify right side
    68,143.53x = 3,135,513,979.37
  5. Step 5: Solve for x
    x = 3,135,513,979.37/68,143.53
  6. Step 6: Final answer
    x = 46,013.38

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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.