Home / 86,623.63-129,935.44-20,959.63

Finding the Fourth Proportional to 86,623.63, 129,935.44 and 20,959.63

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Solution

The fourth proportional to 86,623.63, 129,935.44 and 20,959.63 is: 31,439.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,623.63 : 129,935.44 = 20,959.63 : x
  2. Step 2: Convert to fraction form
    86,623.63/129,935.44 = 20,959.63/x
  3. Step 3: Cross multiply
    86,623.63x = 129,935.44 × 20,959.63
  4. Step 4: Simplify right side
    86,623.63x = 2,723,398,096.61
  5. Step 5: Solve for x
    x = 2,723,398,096.61/86,623.63
  6. Step 6: Final answer
    x = 31,439.44

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.