Home / 51,782.55-71,456.85-28,811.76

Finding the Fourth Proportional to 51,782.55, 71,456.85 and 28,811.76

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Solution

The fourth proportional to 51,782.55, 71,456.85 and 28,811.76 is: 39,758.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,782.55 : 71,456.85 = 28,811.76 : x
  2. Step 2: Convert to fraction form
    51,782.55/71,456.85 = 28,811.76/x
  3. Step 3: Cross multiply
    51,782.55x = 71,456.85 × 28,811.76
  4. Step 4: Simplify right side
    51,782.55x = 2,058,797,344.59
  5. Step 5: Solve for x
    x = 2,058,797,344.59/51,782.55
  6. Step 6: Final answer
    x = 39,758.52

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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.