Home / 51,621.30-71,238.10-28,965.20

Finding the Fourth Proportional to 51,621.30, 71,238.10 and 28,965.20

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Solution

The fourth proportional to 51,621.30, 71,238.10 and 28,965.20 is: 39,972.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,621.30 : 71,238.10 = 28,965.20 : x
  2. Step 2: Convert to fraction form
    51,621.30/71,238.10 = 28,965.20/x
  3. Step 3: Cross multiply
    51,621.30x = 71,238.10 × 28,965.20
  4. Step 4: Simplify right side
    51,621.30x = 2,063,425,814.12
  5. Step 5: Solve for x
    x = 2,063,425,814.12/51,621.30
  6. Step 6: Final answer
    x = 39,972.37

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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.