Home / 72,607.21-100,196.69-40,342.13

Finding the Fourth Proportional to 72,607.21, 100,196.69 and 40,342.13

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Solution

The fourth proportional to 72,607.21, 100,196.69 and 40,342.13 is: 55,671.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,607.21 : 100,196.69 = 40,342.13 : x
  2. Step 2: Convert to fraction form
    72,607.21/100,196.69 = 40,342.13/x
  3. Step 3: Cross multiply
    72,607.21x = 100,196.69 × 40,342.13
  4. Step 4: Simplify right side
    72,607.21x = 4,042,147,190.86
  5. Step 5: Solve for x
    x = 4,042,147,190.86/72,607.21
  6. Step 6: Final answer
    x = 55,671.43

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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.