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Finding the Fourth Proportional to 85,709.94, 118,240.44 and 55,505.00

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Solution

The fourth proportional to 85,709.94, 118,240.44 and 55,505.00 is: 76,571.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,709.94 : 118,240.44 = 55,505.00 : x
  2. Step 2: Convert to fraction form
    85,709.94/118,240.44 = 55,505.00/x
  3. Step 3: Cross multiply
    85,709.94x = 118,240.44 × 55,505.00
  4. Step 4: Simplify right side
    85,709.94x = 6,562,935,031.00
  5. Step 5: Solve for x
    x = 6,562,935,031.00/85,709.94
  6. Step 6: Final answer
    x = 76,571.46

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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.