Home / 51,751.56-71,379.96-30,515.78

Finding the Fourth Proportional to 51,751.56, 71,379.96 and 30,515.78

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Solution

The fourth proportional to 51,751.56, 71,379.96 and 30,515.78 is: 42,089.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,751.56 : 71,379.96 = 30,515.78 : x
  2. Step 2: Convert to fraction form
    51,751.56/71,379.96 = 30,515.78/x
  3. Step 3: Cross multiply
    51,751.56x = 71,379.96 × 30,515.78
  4. Step 4: Simplify right side
    51,751.56x = 2,178,215,155.77
  5. Step 5: Solve for x
    x = 2,178,215,155.77/51,751.56
  6. Step 6: Final answer
    x = 42,089.85

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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.