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Finding the Fourth Proportional to 68,887.45, 103,347.38 and 21,500.83

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Solution

The fourth proportional to 68,887.45, 103,347.38 and 21,500.83 is: 32,256.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,887.45 : 103,347.38 = 21,500.83 : x
  2. Step 2: Convert to fraction form
    68,887.45/103,347.38 = 21,500.83/x
  3. Step 3: Cross multiply
    68,887.45x = 103,347.38 × 21,500.83
  4. Step 4: Simplify right side
    68,887.45x = 2,222,054,448.33
  5. Step 5: Solve for x
    x = 2,222,054,448.33/68,887.45
  6. Step 6: Final answer
    x = 32,256.30

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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.