Home / 74,330.12-102,575.84-40,338.60

Finding the Fourth Proportional to 74,330.12, 102,575.84 and 40,338.60

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Solution

The fourth proportional to 74,330.12, 102,575.84 and 40,338.60 is: 55,667.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,330.12 : 102,575.84 = 40,338.60 : x
  2. Step 2: Convert to fraction form
    74,330.12/102,575.84 = 40,338.60/x
  3. Step 3: Cross multiply
    74,330.12x = 102,575.84 × 40,338.60
  4. Step 4: Simplify right side
    74,330.12x = 4,137,765,577.73
  5. Step 5: Solve for x
    x = 4,137,765,577.73/74,330.12
  6. Step 6: Final answer
    x = 55,667.42

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1.5x scale

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.