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Finding the Fourth Proportional to 85,907.25, 118,603.85 and 56,151.09

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Solution

The fourth proportional to 85,907.25, 118,603.85 and 56,151.09 is: 77,522.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,907.25 : 118,603.85 = 56,151.09 : x
  2. Step 2: Convert to fraction form
    85,907.25/118,603.85 = 56,151.09/x
  3. Step 3: Cross multiply
    85,907.25x = 118,603.85 × 56,151.09
  4. Step 4: Simplify right side
    85,907.25x = 6,659,735,174.94
  5. Step 5: Solve for x
    x = 6,659,735,174.94/85,907.25
  6. Step 6: Final answer
    x = 77,522.39

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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.