Home / 45,773.28-68,642.64-21,132

Finding the Fourth Proportional to 45,773.28, 68,642.64 and 21,132

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Solution

The fourth proportional to 45,773.28, 68,642.64 and 21,132 is: 31,690.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,773.28 : 68,642.64 = 21,132 : x
  2. Step 2: Convert to fraction form
    45,773.28/68,642.64 = 21,132/x
  3. Step 3: Cross multiply
    45,773.28x = 68,642.64 × 21,132
  4. Step 4: Simplify right side
    45,773.28x = 1,450,556,268.48
  5. Step 5: Solve for x
    x = 1,450,556,268.48/45,773.28
  6. Step 6: Final answer
    x = 31,690.02

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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.