Home / 74,766.82-103,178.30-40,775.36

Finding the Fourth Proportional to 74,766.82, 103,178.30 and 40,775.36

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Solution

The fourth proportional to 74,766.82, 103,178.30 and 40,775.36 is: 56,270.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,766.82 : 103,178.30 = 40,775.36 : x
  2. Step 2: Convert to fraction form
    74,766.82/103,178.30 = 40,775.36/x
  3. Step 3: Cross multiply
    74,766.82x = 103,178.30 × 40,775.36
  4. Step 4: Simplify right side
    74,766.82x = 4,207,132,326.69
  5. Step 5: Solve for x
    x = 4,207,132,326.69/74,766.82
  6. Step 6: Final answer
    x = 56,270.05

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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.