Home / 51,749.55-71,377.20-30,513.78

Finding the Fourth Proportional to 51,749.55, 71,377.20 and 30,513.78

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Solution

The fourth proportional to 51,749.55, 71,377.20 and 30,513.78 is: 42,087.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,749.55 : 71,377.20 = 30,513.78 : x
  2. Step 2: Convert to fraction form
    51,749.55/71,377.20 = 30,513.78/x
  3. Step 3: Cross multiply
    51,749.55x = 71,377.20 × 30,513.78
  4. Step 4: Simplify right side
    51,749.55x = 2,177,988,177.82
  5. Step 5: Solve for x
    x = 2,177,988,177.82/51,749.55
  6. Step 6: Final answer
    x = 42,087.09

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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.