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Finding the Fourth Proportional to 72,561.00, 100,132.30 and 40,294.80

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Solution

The fourth proportional to 72,561.00, 100,132.30 and 40,294.80 is: 55,605.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,561.00 : 100,132.30 = 40,294.80 : x
  2. Step 2: Convert to fraction form
    72,561.00/100,132.30 = 40,294.80/x
  3. Step 3: Cross multiply
    72,561.00x = 100,132.30 × 40,294.80
  4. Step 4: Simplify right side
    72,561.00x = 4,034,811,052.41
  5. Step 5: Solve for x
    x = 4,034,811,052.41/72,561.00
  6. Step 6: Final answer
    x = 55,605.78

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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.