Home / 82,505.13-123,809.75-35,120.15

Finding the Fourth Proportional to 82,505.13, 123,809.75 and 35,120.15

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Solution

The fourth proportional to 82,505.13, 123,809.75 and 35,120.15 is: 52,702.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,505.13 : 123,809.75 = 35,120.15 : x
  2. Step 2: Convert to fraction form
    82,505.13/123,809.75 = 35,120.15/x
  3. Step 3: Cross multiply
    82,505.13x = 123,809.75 × 35,120.15
  4. Step 4: Simplify right side
    82,505.13x = 4,348,216,372.41
  5. Step 5: Solve for x
    x = 4,348,216,372.41/82,505.13
  6. Step 6: Final answer
    x = 52,702.38

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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.