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Finding the Fourth Proportional to 70,438.70, 105,659.73 and 23,691.57

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Solution

The fourth proportional to 70,438.70, 105,659.73 and 23,691.57 is: 35,537.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,438.70 : 105,659.73 = 23,691.57 : x
  2. Step 2: Convert to fraction form
    70,438.70/105,659.73 = 23,691.57/x
  3. Step 3: Cross multiply
    70,438.70x = 105,659.73 × 23,691.57
  4. Step 4: Simplify right side
    70,438.70x = 2,503,244,889.48
  5. Step 5: Solve for x
    x = 2,503,244,889.48/70,438.70
  6. Step 6: Final answer
    x = 35,537.92

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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.