Home / 72,697.28-100,321.68-40,432.19

Finding the Fourth Proportional to 72,697.28, 100,321.68 and 40,432.19

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Solution

The fourth proportional to 72,697.28, 100,321.68 and 40,432.19 is: 55,796.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,697.28 : 100,321.68 = 40,432.19 : x
  2. Step 2: Convert to fraction form
    72,697.28/100,321.68 = 40,432.19/x
  3. Step 3: Cross multiply
    72,697.28x = 100,321.68 × 40,432.19
  4. Step 4: Simplify right side
    72,697.28x = 4,056,224,725.27
  5. Step 5: Solve for x
    x = 4,056,224,725.27/72,697.28
  6. Step 6: Final answer
    x = 55,796.10

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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.