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Finding the Fourth Proportional to 76,887.82, 106,010.94 and 63,228.14

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Solution

The fourth proportional to 76,887.82, 106,010.94 and 63,228.14 is: 87,177.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,887.82 : 106,010.94 = 63,228.14 : x
  2. Step 2: Convert to fraction form
    76,887.82/106,010.94 = 63,228.14/x
  3. Step 3: Cross multiply
    76,887.82x = 106,010.94 × 63,228.14
  4. Step 4: Simplify right side
    76,887.82x = 6,702,874,555.85
  5. Step 5: Solve for x
    x = 6,702,874,555.85/76,887.82
  6. Step 6: Final answer
    x = 87,177.33

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1.5x scale

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.