Home / 72,757.25-100,403.51-42,560.45

Finding the Fourth Proportional to 72,757.25, 100,403.51 and 42,560.45

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Solution

The fourth proportional to 72,757.25, 100,403.51 and 42,560.45 is: 58,732.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,757.25 : 100,403.51 = 42,560.45 : x
  2. Step 2: Convert to fraction form
    72,757.25/100,403.51 = 42,560.45/x
  3. Step 3: Cross multiply
    72,757.25x = 100,403.51 × 42,560.45
  4. Step 4: Simplify right side
    72,757.25x = 4,273,218,171.56
  5. Step 5: Solve for x
    x = 4,273,218,171.56/72,757.25
  6. Step 6: Final answer
    x = 58,732.55

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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.