Home / 72,179.27-99,609.59-40,349.51

Finding the Fourth Proportional to 72,179.27, 99,609.59 and 40,349.51

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Solution

The fourth proportional to 72,179.27, 99,609.59 and 40,349.51 is: 55,683.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,179.27 : 99,609.59 = 40,349.51 : x
  2. Step 2: Convert to fraction form
    72,179.27/99,609.59 = 40,349.51/x
  3. Step 3: Cross multiply
    72,179.27x = 99,609.59 × 40,349.51
  4. Step 4: Simplify right side
    72,179.27x = 4,019,198,147.80
  5. Step 5: Solve for x
    x = 4,019,198,147.80/72,179.27
  6. Step 6: Final answer
    x = 55,683.55

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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.