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Finding the Fourth Proportional to 66,795.29, 100,199.51 and 19,410.80

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Solution

The fourth proportional to 66,795.29, 100,199.51 and 19,410.80 is: 29,118.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,795.29 : 100,199.51 = 19,410.80 : x
  2. Step 2: Convert to fraction form
    66,795.29/100,199.51 = 19,410.80/x
  3. Step 3: Cross multiply
    66,795.29x = 100,199.51 × 19,410.80
  4. Step 4: Simplify right side
    66,795.29x = 1,944,952,050.66
  5. Step 5: Solve for x
    x = 1,944,952,050.66/66,795.29
  6. Step 6: Final answer
    x = 29,118.10

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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.