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Finding the Fourth Proportional to 51,353.92, 70,867.87 and 30,129.13

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Solution

The fourth proportional to 51,353.92, 70,867.87 and 30,129.13 is: 41,577.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,353.92 : 70,867.87 = 30,129.13 : x
  2. Step 2: Convert to fraction form
    51,353.92/70,867.87 = 30,129.13/x
  3. Step 3: Cross multiply
    51,353.92x = 70,867.87 × 30,129.13
  4. Step 4: Simplify right side
    51,353.92x = 2,135,187,268.05
  5. Step 5: Solve for x
    x = 2,135,187,268.05/51,353.92
  6. Step 6: Final answer
    x = 41,577.88

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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.