Home / 82,505.58-123,754.30-45,138.66

Finding the Fourth Proportional to 82,505.58, 123,754.30 and 45,138.66

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Solution

The fourth proportional to 82,505.58, 123,754.30 and 45,138.66 is: 67,705.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,505.58 : 123,754.30 = 45,138.66 : x
  2. Step 2: Convert to fraction form
    82,505.58/123,754.30 = 45,138.66/x
  3. Step 3: Cross multiply
    82,505.58x = 123,754.30 × 45,138.66
  4. Step 4: Simplify right side
    82,505.58x = 5,586,103,271.24
  5. Step 5: Solve for x
    x = 5,586,103,271.24/82,505.58
  6. Step 6: Final answer
    x = 67,705.76

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1.5x scale

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.