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Finding the Fourth Proportional to 66,302.94, 91,489.95 and 39,446.58

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Solution

The fourth proportional to 66,302.94, 91,489.95 and 39,446.58 is: 54,431.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,302.94 : 91,489.95 = 39,446.58 : x
  2. Step 2: Convert to fraction form
    66,302.94/91,489.95 = 39,446.58/x
  3. Step 3: Cross multiply
    66,302.94x = 91,489.95 × 39,446.58
  4. Step 4: Simplify right side
    66,302.94x = 3,608,965,631.87
  5. Step 5: Solve for x
    x = 3,608,965,631.87/66,302.94
  6. Step 6: Final answer
    x = 54,431.46

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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.