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Finding the Fourth Proportional to 72,790.41, 100,452.30 and 40,959.30

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Solution

The fourth proportional to 72,790.41, 100,452.30 and 40,959.30 is: 56,524.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,790.41 : 100,452.30 = 40,959.30 : x
  2. Step 2: Convert to fraction form
    72,790.41/100,452.30 = 40,959.30/x
  3. Step 3: Cross multiply
    72,790.41x = 100,452.30 × 40,959.30
  4. Step 4: Simplify right side
    72,790.41x = 4,114,455,891.39
  5. Step 5: Solve for x
    x = 4,114,455,891.39/72,790.41
  6. Step 6: Final answer
    x = 56,524.70

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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.