Home / 68,436.15-102,621.42-35,139.08

Finding the Fourth Proportional to 68,436.15, 102,621.42 and 35,139.08

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Solution

The fourth proportional to 68,436.15, 102,621.42 and 35,139.08 is: 52,691.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,436.15 : 102,621.42 = 35,139.08 : x
  2. Step 2: Convert to fraction form
    68,436.15/102,621.42 = 35,139.08/x
  3. Step 3: Cross multiply
    68,436.15x = 102,621.42 × 35,139.08
  4. Step 4: Simplify right side
    68,436.15x = 3,606,021,773.99
  5. Step 5: Solve for x
    x = 3,606,021,773.99/68,436.15
  6. Step 6: Final answer
    x = 52,691.77

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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.