Home / 45,777.28-68,648.64-21,136

Finding the Fourth Proportional to 45,777.28, 68,648.64 and 21,136

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Solution

The fourth proportional to 45,777.28, 68,648.64 and 21,136 is: 31,696.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,777.28 : 68,648.64 = 21,136 : x
  2. Step 2: Convert to fraction form
    45,777.28/68,648.64 = 21,136/x
  3. Step 3: Cross multiply
    45,777.28x = 68,648.64 × 21,136
  4. Step 4: Simplify right side
    45,777.28x = 1,450,957,655.04
  5. Step 5: Solve for x
    x = 1,450,957,655.04/45,777.28
  6. Step 6: Final answer
    x = 31,696.02

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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.