Home / 82,087.61-123,131.43-19,758.11

Finding the Fourth Proportional to 82,087.61, 123,131.43 and 19,758.11

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Solution

The fourth proportional to 82,087.61, 123,131.43 and 19,758.11 is: 29,637.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,087.61 : 123,131.43 = 19,758.11 : x
  2. Step 2: Convert to fraction form
    82,087.61/123,131.43 = 19,758.11/x
  3. Step 3: Cross multiply
    82,087.61x = 123,131.43 × 19,758.11
  4. Step 4: Simplify right side
    82,087.61x = 2,432,843,722.74
  5. Step 5: Solve for x
    x = 2,432,843,722.74/82,087.61
  6. Step 6: Final answer
    x = 29,637.16

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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.