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Finding the Fourth Proportional to 66,267.84, 91,446.24 and 39,409.92

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Solution

The fourth proportional to 66,267.84, 91,446.24 and 39,409.92 is: 54,383.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,267.84 : 91,446.24 = 39,409.92 : x
  2. Step 2: Convert to fraction form
    66,267.84/91,446.24 = 39,409.92/x
  3. Step 3: Cross multiply
    66,267.84x = 91,446.24 × 39,409.92
  4. Step 4: Simplify right side
    66,267.84x = 3,603,889,002.70
  5. Step 5: Solve for x
    x = 3,603,889,002.70/66,267.84
  6. Step 6: Final answer
    x = 54,383.68

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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.