Home / 52,090.94-78,136.41-12,648.08

Finding the Fourth Proportional to 52,090.94, 78,136.41 and 12,648.08

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Solution

The fourth proportional to 52,090.94, 78,136.41 and 12,648.08 is: 18,972.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,090.94 : 78,136.41 = 12,648.08 : x
  2. Step 2: Convert to fraction form
    52,090.94/78,136.41 = 12,648.08/x
  3. Step 3: Cross multiply
    52,090.94x = 78,136.41 × 12,648.08
  4. Step 4: Simplify right side
    52,090.94x = 988,275,564.59
  5. Step 5: Solve for x
    x = 988,275,564.59/52,090.94
  6. Step 6: Final answer
    x = 18,972.12

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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.