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Finding the Fourth Proportional to 66,645.44, 99,953.40 and 19,250.22

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Solution

The fourth proportional to 66,645.44, 99,953.40 and 19,250.22 is: 28,871.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,645.44 : 99,953.40 = 19,250.22 : x
  2. Step 2: Convert to fraction form
    66,645.44/99,953.40 = 19,250.22/x
  3. Step 3: Cross multiply
    66,645.44x = 99,953.40 × 19,250.22
  4. Step 4: Simplify right side
    66,645.44x = 1,924,124,939.75
  5. Step 5: Solve for x
    x = 1,924,124,939.75/66,645.44
  6. Step 6: Final answer
    x = 28,871.07

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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.