Home / 47,278.12-65,244-28,415.56

Finding the Fourth Proportional to 47,278.12, 65,244 and 28,415.56

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Solution

The fourth proportional to 47,278.12, 65,244 and 28,415.56 is: 39,213.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,278.12 : 65,244 = 28,415.56 : x
  2. Step 2: Convert to fraction form
    47,278.12/65,244 = 28,415.56/x
  3. Step 3: Cross multiply
    47,278.12x = 65,244 × 28,415.56
  4. Step 4: Simplify right side
    47,278.12x = 1,853,944,796.64
  5. Step 5: Solve for x
    x = 1,853,944,796.64/47,278.12
  6. Step 6: Final answer
    x = 39,213.59

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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.