Home / 72,631.89-100,241.35-40,800.81

Finding the Fourth Proportional to 72,631.89, 100,241.35 and 40,800.81

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Solution

The fourth proportional to 72,631.89, 100,241.35 and 40,800.81 is: 56,310.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,631.89 : 100,241.35 = 40,800.81 : x
  2. Step 2: Convert to fraction form
    72,631.89/100,241.35 = 40,800.81/x
  3. Step 3: Cross multiply
    72,631.89x = 100,241.35 × 40,800.81
  4. Step 4: Simplify right side
    72,631.89x = 4,089,928,549.40
  5. Step 5: Solve for x
    x = 4,089,928,549.40/72,631.89
  6. Step 6: Final answer
    x = 56,310.37

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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.