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Finding the Fourth Proportional to 74,511, 111,766.77 and 70,773.66

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Solution

The fourth proportional to 74,511, 111,766.77 and 70,773.66 is: 106,160.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,511 : 111,766.77 = 70,773.66 : x
  2. Step 2: Convert to fraction form
    74,511/111,766.77 = 70,773.66/x
  3. Step 3: Cross multiply
    74,511x = 111,766.77 × 70,773.66
  4. Step 4: Simplify right side
    74,511x = 7,910,143,379.28
  5. Step 5: Solve for x
    x = 7,910,143,379.28/74,511
  6. Step 6: Final answer
    x = 106,160.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.