Home / 51,581.80-71,177.92-28,919.32

Finding the Fourth Proportional to 51,581.80, 71,177.92 and 28,919.32

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Solution

The fourth proportional to 51,581.80, 71,177.92 and 28,919.32 is: 39,905.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,581.80 : 71,177.92 = 28,919.32 : x
  2. Step 2: Convert to fraction form
    51,581.80/71,177.92 = 28,919.32/x
  3. Step 3: Cross multiply
    51,581.80x = 71,177.92 × 28,919.32
  4. Step 4: Simplify right side
    51,581.80x = 2,058,417,045.41
  5. Step 5: Solve for x
    x = 2,058,417,045.41/51,581.80
  6. Step 6: Final answer
    x = 39,905.88

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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.