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Finding the Fourth Proportional to 72,874.35, 100,569.50 and 40,610.23

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Solution

The fourth proportional to 72,874.35, 100,569.50 and 40,610.23 is: 56,043.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,874.35 : 100,569.50 = 40,610.23 : x
  2. Step 2: Convert to fraction form
    72,874.35/100,569.50 = 40,610.23/x
  3. Step 3: Cross multiply
    72,874.35x = 100,569.50 × 40,610.23
  4. Step 4: Simplify right side
    72,874.35x = 4,084,150,223.80
  5. Step 5: Solve for x
    x = 4,084,150,223.80/72,874.35
  6. Step 6: Final answer
    x = 56,043.73

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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.