Home / 82,681.61-123,961.35-26,489.21

Finding the Fourth Proportional to 82,681.61, 123,961.35 and 26,489.21

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Solution

The fourth proportional to 82,681.61, 123,961.35 and 26,489.21 is: 39,714.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,681.61 : 123,961.35 = 26,489.21 : x
  2. Step 2: Convert to fraction form
    82,681.61/123,961.35 = 26,489.21/x
  3. Step 3: Cross multiply
    82,681.61x = 123,961.35 × 26,489.21
  4. Step 4: Simplify right side
    82,681.61x = 3,283,637,711.56
  5. Step 5: Solve for x
    x = 3,283,637,711.56/82,681.61
  6. Step 6: Final answer
    x = 39,714.25

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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.