Home / 72,725.10-100,348.41-40,455.46

Finding the Fourth Proportional to 72,725.10, 100,348.41 and 40,455.46

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Solution

The fourth proportional to 72,725.10, 100,348.41 and 40,455.46 is: 55,821.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,725.10 : 100,348.41 = 40,455.46 : x
  2. Step 2: Convert to fraction form
    72,725.10/100,348.41 = 40,455.46/x
  3. Step 3: Cross multiply
    72,725.10x = 100,348.41 × 40,455.46
  4. Step 4: Simplify right side
    72,725.10x = 4,059,641,086.82
  5. Step 5: Solve for x
    x = 4,059,641,086.82/72,725.10
  6. Step 6: Final answer
    x = 55,821.73

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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.