Home / 82,639.80-123,977.10-43,186.32

Finding the Fourth Proportional to 82,639.80, 123,977.10 and 43,186.32

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Solution

The fourth proportional to 82,639.80, 123,977.10 and 43,186.32 is: 64,788.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,639.80 : 123,977.10 = 43,186.32 : x
  2. Step 2: Convert to fraction form
    82,639.80/123,977.10 = 43,186.32/x
  3. Step 3: Cross multiply
    82,639.80x = 123,977.10 × 43,186.32
  4. Step 4: Simplify right side
    82,639.80x = 5,354,114,713.27
  5. Step 5: Solve for x
    x = 5,354,114,713.27/82,639.80
  6. Step 6: Final answer
    x = 64,788.57

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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.