Home / 72,589.79-100,171.32-40,760.03

Finding the Fourth Proportional to 72,589.79, 100,171.32 and 40,760.03

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Solution

The fourth proportional to 72,589.79, 100,171.32 and 40,760.03 is: 56,247.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,589.79 : 100,171.32 = 40,760.03 : x
  2. Step 2: Convert to fraction form
    72,589.79/100,171.32 = 40,760.03/x
  3. Step 3: Cross multiply
    72,589.79x = 100,171.32 × 40,760.03
  4. Step 4: Simplify right side
    72,589.79x = 4,082,986,008.34
  5. Step 5: Solve for x
    x = 4,082,986,008.34/72,589.79
  6. Step 6: Final answer
    x = 56,247.39

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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.