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Finding the Fourth Proportional to 70,094.45, 96,729.09 and 39,879.12

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Solution

The fourth proportional to 70,094.45, 96,729.09 and 39,879.12 is: 55,032.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,094.45 : 96,729.09 = 39,879.12 : x
  2. Step 2: Convert to fraction form
    70,094.45/96,729.09 = 39,879.12/x
  3. Step 3: Cross multiply
    70,094.45x = 96,729.09 × 39,879.12
  4. Step 4: Simplify right side
    70,094.45x = 3,857,470,656.69
  5. Step 5: Solve for x
    x = 3,857,470,656.69/70,094.45
  6. Step 6: Final answer
    x = 55,032.47

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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.