Home / 72,191.39-99,621.25-39,923.92

Finding the Fourth Proportional to 72,191.39, 99,621.25 and 39,923.92

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Solution

The fourth proportional to 72,191.39, 99,621.25 and 39,923.92 is: 55,093.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,191.39 : 99,621.25 = 39,923.92 : x
  2. Step 2: Convert to fraction form
    72,191.39/99,621.25 = 39,923.92/x
  3. Step 3: Cross multiply
    72,191.39x = 99,621.25 × 39,923.92
  4. Step 4: Simplify right side
    72,191.39x = 3,977,270,466.44
  5. Step 5: Solve for x
    x = 3,977,270,466.44/72,191.39
  6. Step 6: Final answer
    x = 55,093.42

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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.