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Finding the Fourth Proportional to 85,658.49, 118,262.32 and 55,043.98

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Solution

The fourth proportional to 85,658.49, 118,262.32 and 55,043.98 is: 75,995.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,658.49 : 118,262.32 = 55,043.98 : x
  2. Step 2: Convert to fraction form
    85,658.49/118,262.32 = 55,043.98/x
  3. Step 3: Cross multiply
    85,658.49x = 118,262.32 × 55,043.98
  4. Step 4: Simplify right side
    85,658.49x = 6,509,628,343.57
  5. Step 5: Solve for x
    x = 6,509,628,343.57/85,658.49
  6. Step 6: Final answer
    x = 75,995.13

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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.