Home / 81,896.55-123,012.93-53,856.45

Finding the Fourth Proportional to 81,896.55, 123,012.93 and 53,856.45

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Solution

The fourth proportional to 81,896.55, 123,012.93 and 53,856.45 is: 80,895.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,896.55 : 123,012.93 = 53,856.45 : x
  2. Step 2: Convert to fraction form
    81,896.55/123,012.93 = 53,856.45/x
  3. Step 3: Cross multiply
    81,896.55x = 123,012.93 × 53,856.45
  4. Step 4: Simplify right side
    81,896.55x = 6,625,039,713.90
  5. Step 5: Solve for x
    x = 6,625,039,713.90/81,896.55
  6. Step 6: Final answer
    x = 80,895.22

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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.