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Finding the Fourth Proportional to 57,245.83, 78,999.52 and 31,750.42

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Solution

The fourth proportional to 57,245.83, 78,999.52 and 31,750.42 is: 43,815.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,245.83 : 78,999.52 = 31,750.42 : x
  2. Step 2: Convert to fraction form
    57,245.83/78,999.52 = 31,750.42/x
  3. Step 3: Cross multiply
    57,245.83x = 78,999.52 × 31,750.42
  4. Step 4: Simplify right side
    57,245.83x = 2,508,267,939.80
  5. Step 5: Solve for x
    x = 2,508,267,939.80/57,245.83
  6. Step 6: Final answer
    x = 43,815.73

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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.