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Finding the Fourth Proportional to 78,503, 117,725.70 and 25,896.92

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Solution

The fourth proportional to 78,503, 117,725.70 and 25,896.92 is: 38,835.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,503 : 117,725.70 = 25,896.92 : x
  2. Step 2: Convert to fraction form
    78,503/117,725.70 = 25,896.92/x
  3. Step 3: Cross multiply
    78,503x = 117,725.70 × 25,896.92
  4. Step 4: Simplify right side
    78,503x = 3,048,733,034.84
  5. Step 5: Solve for x
    x = 3,048,733,034.84/78,503
  6. Step 6: Final answer
    x = 38,835.88

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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.