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Finding the Fourth Proportional to 73,017.69, 109,544.76 and 20,426.78

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Solution

The fourth proportional to 73,017.69, 109,544.76 and 20,426.78 is: 30,645.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,017.69 : 109,544.76 = 20,426.78 : x
  2. Step 2: Convert to fraction form
    73,017.69/109,544.76 = 20,426.78/x
  3. Step 3: Cross multiply
    73,017.69x = 109,544.76 × 20,426.78
  4. Step 4: Simplify right side
    73,017.69x = 2,237,646,164.95
  5. Step 5: Solve for x
    x = 2,237,646,164.95/73,017.69
  6. Step 6: Final answer
    x = 30,645.26

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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.