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Finding the Fourth Proportional to 85,708.94, 118,239.06 and 55,504

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Solution

The fourth proportional to 85,708.94, 118,239.06 and 55,504 is: 76,570.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,708.94 : 118,239.06 = 55,504 : x
  2. Step 2: Convert to fraction form
    85,708.94/118,239.06 = 55,504/x
  3. Step 3: Cross multiply
    85,708.94x = 118,239.06 × 55,504
  4. Step 4: Simplify right side
    85,708.94x = 6,562,740,786.24
  5. Step 5: Solve for x
    x = 6,562,740,786.24/85,708.94
  6. Step 6: Final answer
    x = 76,570.08

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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.