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Finding the Fourth Proportional to 72,549.94, 100,123.88 and 40,286.22

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Solution

The fourth proportional to 72,549.94, 100,123.88 and 40,286.22 is: 55,597.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,549.94 : 100,123.88 = 40,286.22 : x
  2. Step 2: Convert to fraction form
    72,549.94/100,123.88 = 40,286.22/x
  3. Step 3: Cross multiply
    72,549.94x = 100,123.88 × 40,286.22
  4. Step 4: Simplify right side
    72,549.94x = 4,033,612,656.93
  5. Step 5: Solve for x
    x = 4,033,612,656.93/72,549.94
  6. Step 6: Final answer
    x = 55,597.74

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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.