Home / 72,661.11-108,991.52-20,070.44

Finding the Fourth Proportional to 72,661.11, 108,991.52 and 20,070.44

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Solution

The fourth proportional to 72,661.11, 108,991.52 and 20,070.44 is: 30,105.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,661.11 : 108,991.52 = 20,070.44 : x
  2. Step 2: Convert to fraction form
    72,661.11/108,991.52 = 20,070.44/x
  3. Step 3: Cross multiply
    72,661.11x = 108,991.52 × 20,070.44
  4. Step 4: Simplify right side
    72,661.11x = 2,187,507,762.67
  5. Step 5: Solve for x
    x = 2,187,507,762.67/72,661.11
  6. Step 6: Final answer
    x = 30,105.62

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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.