Home / 51,490.82-71,049.12-28,830.76

Finding the Fourth Proportional to 51,490.82, 71,049.12 and 28,830.76

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Solution

The fourth proportional to 51,490.82, 71,049.12 and 28,830.76 is: 39,781.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,490.82 : 71,049.12 = 28,830.76 : x
  2. Step 2: Convert to fraction form
    51,490.82/71,049.12 = 28,830.76/x
  3. Step 3: Cross multiply
    51,490.82x = 71,049.12 × 28,830.76
  4. Step 4: Simplify right side
    51,490.82x = 2,048,400,126.93
  5. Step 5: Solve for x
    x = 2,048,400,126.93/51,490.82
  6. Step 6: Final answer
    x = 39,781.85

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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.