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Finding the Fourth Proportional to 66,625.80, 91,944.80 and 36,412.40

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Solution

The fourth proportional to 66,625.80, 91,944.80 and 36,412.40 is: 50,249.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,625.80 : 91,944.80 = 36,412.40 : x
  2. Step 2: Convert to fraction form
    66,625.80/91,944.80 = 36,412.40/x
  3. Step 3: Cross multiply
    66,625.80x = 91,944.80 × 36,412.40
  4. Step 4: Simplify right side
    66,625.80x = 3,347,930,835.52
  5. Step 5: Solve for x
    x = 3,347,930,835.52/66,625.80
  6. Step 6: Final answer
    x = 50,249.77

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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.