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Finding the Fourth Proportional to 66,879.36, 100,291.68 and 35,709.12

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Solution

The fourth proportional to 66,879.36, 100,291.68 and 35,709.12 is: 53,549.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,879.36 : 100,291.68 = 35,709.12 : x
  2. Step 2: Convert to fraction form
    66,879.36/100,291.68 = 35,709.12/x
  3. Step 3: Cross multiply
    66,879.36x = 100,291.68 × 35,709.12
  4. Step 4: Simplify right side
    66,879.36x = 3,581,327,636.12
  5. Step 5: Solve for x
    x = 3,581,327,636.12/66,879.36
  6. Step 6: Final answer
    x = 53,549.07

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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.