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Finding the Fourth Proportional to 72,459.93, 100,000.50 and 40,197.73

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Solution

The fourth proportional to 72,459.93, 100,000.50 and 40,197.73 is: 55,476.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,459.93 : 100,000.50 = 40,197.73 : x
  2. Step 2: Convert to fraction form
    72,459.93/100,000.50 = 40,197.73/x
  3. Step 3: Cross multiply
    72,459.93x = 100,000.50 × 40,197.73
  4. Step 4: Simplify right side
    72,459.93x = 4,019,793,098.87
  5. Step 5: Solve for x
    x = 4,019,793,098.87/72,459.93
  6. Step 6: Final answer
    x = 55,476.08

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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.