Home / 51,963.20-71,700-30,743.36

Finding the Fourth Proportional to 51,963.20, 71,700 and 30,743.36

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Solution

The fourth proportional to 51,963.20, 71,700 and 30,743.36 is: 42,420.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,963.20 : 71,700 = 30,743.36 : x
  2. Step 2: Convert to fraction form
    51,963.20/71,700 = 30,743.36/x
  3. Step 3: Cross multiply
    51,963.20x = 71,700 × 30,743.36
  4. Step 4: Simplify right side
    51,963.20x = 2,204,298,912
  5. Step 5: Solve for x
    x = 2,204,298,912/51,963.20
  6. Step 6: Final answer
    x = 42,420.38

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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.