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Finding the Fourth Proportional to 72,601.63, 100,190.25 and 40,770.55

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Solution

The fourth proportional to 72,601.63, 100,190.25 and 40,770.55 is: 56,263.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,601.63 : 100,190.25 = 40,770.55 : x
  2. Step 2: Convert to fraction form
    72,601.63/100,190.25 = 40,770.55/x
  3. Step 3: Cross multiply
    72,601.63x = 100,190.25 × 40,770.55
  4. Step 4: Simplify right side
    72,601.63x = 4,084,811,597.14
  5. Step 5: Solve for x
    x = 4,084,811,597.14/72,601.63
  6. Step 6: Final answer
    x = 56,263.36

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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.