Home / 72,021.58-99,394.77-40,196.68

Finding the Fourth Proportional to 72,021.58, 99,394.77 and 40,196.68

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Solution

The fourth proportional to 72,021.58, 99,394.77 and 40,196.68 is: 55,474.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,021.58 : 99,394.77 = 40,196.68 : x
  2. Step 2: Convert to fraction form
    72,021.58/99,394.77 = 40,196.68/x
  3. Step 3: Cross multiply
    72,021.58x = 99,394.77 × 40,196.68
  4. Step 4: Simplify right side
    72,021.58x = 3,995,339,763.36
  5. Step 5: Solve for x
    x = 3,995,339,763.36/72,021.58
  6. Step 6: Final answer
    x = 55,474.20

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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.