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Finding the Fourth Proportional to 70,180.70, 96,840.36 and 39,961.82

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Solution

The fourth proportional to 70,180.70, 96,840.36 and 39,961.82 is: 55,142.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,180.70 : 96,840.36 = 39,961.82 : x
  2. Step 2: Convert to fraction form
    70,180.70/96,840.36 = 39,961.82/x
  3. Step 3: Cross multiply
    70,180.70x = 96,840.36 × 39,961.82
  4. Step 4: Simplify right side
    70,180.70x = 3,869,917,277.16
  5. Step 5: Solve for x
    x = 3,869,917,277.16/70,180.70
  6. Step 6: Final answer
    x = 55,142.19

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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.