Home / 78,743.12-108,634.49-48,475.85

Finding the Fourth Proportional to 78,743.12, 108,634.49 and 48,475.85

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Solution

The fourth proportional to 78,743.12, 108,634.49 and 48,475.85 is: 66,877.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,743.12 : 108,634.49 = 48,475.85 : x
  2. Step 2: Convert to fraction form
    78,743.12/108,634.49 = 48,475.85/x
  3. Step 3: Cross multiply
    78,743.12x = 108,634.49 × 48,475.85
  4. Step 4: Simplify right side
    78,743.12x = 5,266,148,456.51
  5. Step 5: Solve for x
    x = 5,266,148,456.51/78,743.12
  6. Step 6: Final answer
    x = 66,877.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.