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Finding the Fourth Proportional to 57,956.40, 87,040.20 and 50,698.80

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Solution

The fourth proportional to 57,956.40, 87,040.20 and 50,698.80 is: 76,140.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,956.40 : 87,040.20 = 50,698.80 : x
  2. Step 2: Convert to fraction form
    57,956.40/87,040.20 = 50,698.80/x
  3. Step 3: Cross multiply
    57,956.40x = 87,040.20 × 50,698.80
  4. Step 4: Simplify right side
    57,956.40x = 4,412,833,691.76
  5. Step 5: Solve for x
    x = 4,412,833,691.76/57,956.40
  6. Step 6: Final answer
    x = 76,140.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.