Home / 74,765.34-103,178.64-40,776.60

Finding the Fourth Proportional to 74,765.34, 103,178.64 and 40,776.60

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Solution

The fourth proportional to 74,765.34, 103,178.64 and 40,776.60 is: 56,273.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,765.34 : 103,178.64 = 40,776.60 : x
  2. Step 2: Convert to fraction form
    74,765.34/103,178.64 = 40,776.60/x
  3. Step 3: Cross multiply
    74,765.34x = 103,178.64 × 40,776.60
  4. Step 4: Simplify right side
    74,765.34x = 4,207,274,131.82
  5. Step 5: Solve for x
    x = 4,207,274,131.82/74,765.34
  6. Step 6: Final answer
    x = 56,273.06

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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.