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Finding the Fourth Proportional to 72,602.80, 100,189.26 and 40,773.04

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Solution

The fourth proportional to 72,602.80, 100,189.26 and 40,773.04 is: 56,265.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,602.80 : 100,189.26 = 40,773.04 : x
  2. Step 2: Convert to fraction form
    72,602.80/100,189.26 = 40,773.04/x
  3. Step 3: Cross multiply
    72,602.80x = 100,189.26 × 40,773.04
  4. Step 4: Simplify right side
    72,602.80x = 4,085,020,705.55
  5. Step 5: Solve for x
    x = 4,085,020,705.55/72,602.80
  6. Step 6: Final answer
    x = 56,265.33

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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.