Home / 91,268.64-136,789.92-51,705.81

Finding the Fourth Proportional to 91,268.64, 136,789.92 and 51,705.81

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Solution

The fourth proportional to 91,268.64, 136,789.92 and 51,705.81 is: 77,494.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,268.64 : 136,789.92 = 51,705.81 : x
  2. Step 2: Convert to fraction form
    91,268.64/136,789.92 = 51,705.81/x
  3. Step 3: Cross multiply
    91,268.64x = 136,789.92 × 51,705.81
  4. Step 4: Simplify right side
    91,268.64x = 7,072,833,613.44
  5. Step 5: Solve for x
    x = 7,072,833,613.44/91,268.64
  6. Step 6: Final answer
    x = 77,494.68

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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.