Home / 74,286.64-111,248.16-67,090.06

Finding the Fourth Proportional to 74,286.64, 111,248.16 and 67,090.06

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Solution

The fourth proportional to 74,286.64, 111,248.16 and 67,090.06 is: 100,470.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,286.64 : 111,248.16 = 67,090.06 : x
  2. Step 2: Convert to fraction form
    74,286.64/111,248.16 = 67,090.06/x
  3. Step 3: Cross multiply
    74,286.64x = 111,248.16 × 67,090.06
  4. Step 4: Simplify right side
    74,286.64x = 7,463,645,729.29
  5. Step 5: Solve for x
    x = 7,463,645,729.29/74,286.64
  6. Step 6: Final answer
    x = 100,470.90

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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.