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Finding the Fourth Proportional to 65,789.49, 98,709.02 and 39,512.55

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Solution

The fourth proportional to 65,789.49, 98,709.02 and 39,512.55 is: 59,283.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,789.49 : 98,709.02 = 39,512.55 : x
  2. Step 2: Convert to fraction form
    65,789.49/98,709.02 = 39,512.55/x
  3. Step 3: Cross multiply
    65,789.49x = 98,709.02 × 39,512.55
  4. Step 4: Simplify right side
    65,789.49x = 3,900,244,890.64
  5. Step 5: Solve for x
    x = 3,900,244,890.64/65,789.49
  6. Step 6: Final answer
    x = 59,283.71

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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.