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Finding the Fourth Proportional to 72,584.71, 100,176.90 and 40,755.66

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Solution

The fourth proportional to 72,584.71, 100,176.90 and 40,755.66 is: 56,248.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,584.71 : 100,176.90 = 40,755.66 : x
  2. Step 2: Convert to fraction form
    72,584.71/100,176.90 = 40,755.66/x
  3. Step 3: Cross multiply
    72,584.71x = 100,176.90 × 40,755.66
  4. Step 4: Simplify right side
    72,584.71x = 4,082,775,377.01
  5. Step 5: Solve for x
    x = 4,082,775,377.01/72,584.71
  6. Step 6: Final answer
    x = 56,248.42

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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.