Home / 72,631.27-100,231.21-40,800.19

Finding the Fourth Proportional to 72,631.27, 100,231.21 and 40,800.19

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Solution

The fourth proportional to 72,631.27, 100,231.21 and 40,800.19 is: 56,304.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,631.27 : 100,231.21 = 40,800.19 : x
  2. Step 2: Convert to fraction form
    72,631.27/100,231.21 = 40,800.19/x
  3. Step 3: Cross multiply
    72,631.27x = 100,231.21 × 40,800.19
  4. Step 4: Simplify right side
    72,631.27x = 4,089,452,411.93
  5. Step 5: Solve for x
    x = 4,089,452,411.93/72,631.27
  6. Step 6: Final answer
    x = 56,304.29

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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.