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Finding the Fourth Proportional to 73,119.40, 100,903.94 and 41,289.64

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Solution

The fourth proportional to 73,119.40, 100,903.94 and 41,289.64 is: 56,979.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,119.40 : 100,903.94 = 41,289.64 : x
  2. Step 2: Convert to fraction form
    73,119.40/100,903.94 = 41,289.64/x
  3. Step 3: Cross multiply
    73,119.40x = 100,903.94 × 41,289.64
  4. Step 4: Simplify right side
    73,119.40x = 4,166,287,357.18
  5. Step 5: Solve for x
    x = 4,166,287,357.18/73,119.40
  6. Step 6: Final answer
    x = 56,979.23

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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.