Home / 82,561.57-123,803.32-31,984.28

Finding the Fourth Proportional to 82,561.57, 123,803.32 and 31,984.28

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Solution

The fourth proportional to 82,561.57, 123,803.32 and 31,984.28 is: 47,961.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,561.57 : 123,803.32 = 31,984.28 : x
  2. Step 2: Convert to fraction form
    82,561.57/123,803.32 = 31,984.28/x
  3. Step 3: Cross multiply
    82,561.57x = 123,803.32 × 31,984.28
  4. Step 4: Simplify right side
    82,561.57x = 3,959,760,281.36
  5. Step 5: Solve for x
    x = 3,959,760,281.36/82,561.57
  6. Step 6: Final answer
    x = 47,961.30

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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.