Home / 79,995.12-119,991.06-20,829.48

Finding the Fourth Proportional to 79,995.12, 119,991.06 and 20,829.48

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Solution

The fourth proportional to 79,995.12, 119,991.06 and 20,829.48 is: 31,243.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,995.12 : 119,991.06 = 20,829.48 : x
  2. Step 2: Convert to fraction form
    79,995.12/119,991.06 = 20,829.48/x
  3. Step 3: Cross multiply
    79,995.12x = 119,991.06 × 20,829.48
  4. Step 4: Simplify right side
    79,995.12x = 2,499,351,384.45
  5. Step 5: Solve for x
    x = 2,499,351,384.45/79,995.12
  6. Step 6: Final answer
    x = 31,243.80

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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.