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Finding the Fourth Proportional to 72,607.46, 100,197.03 and 40,342.38

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Solution

The fourth proportional to 72,607.46, 100,197.03 and 40,342.38 is: 55,671.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,607.46 : 100,197.03 = 40,342.38 : x
  2. Step 2: Convert to fraction form
    72,607.46/100,197.03 = 40,342.38/x
  3. Step 3: Cross multiply
    72,607.46x = 100,197.03 × 40,342.38
  4. Step 4: Simplify right side
    72,607.46x = 4,042,186,659.13
  5. Step 5: Solve for x
    x = 4,042,186,659.13/72,607.46
  6. Step 6: Final answer
    x = 55,671.78

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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.