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Finding the Fourth Proportional to 82,136.94, 113,360.64 and 49,887.88

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Solution

The fourth proportional to 82,136.94, 113,360.64 and 49,887.88 is: 68,852.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,136.94 : 113,360.64 = 49,887.88 : x
  2. Step 2: Convert to fraction form
    82,136.94/113,360.64 = 49,887.88/x
  3. Step 3: Cross multiply
    82,136.94x = 113,360.64 × 49,887.88
  4. Step 4: Simplify right side
    82,136.94x = 5,655,322,005.04
  5. Step 5: Solve for x
    x = 5,655,322,005.04/82,136.94
  6. Step 6: Final answer
    x = 68,852.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.