Home / 52,090.88-78,136.25-12,647.93

Finding the Fourth Proportional to 52,090.88, 78,136.25 and 12,647.93

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Solution

The fourth proportional to 52,090.88, 78,136.25 and 12,647.93 is: 18,971.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,090.88 : 78,136.25 = 12,647.93 : x
  2. Step 2: Convert to fraction form
    52,090.88/78,136.25 = 12,647.93/x
  3. Step 3: Cross multiply
    52,090.88x = 78,136.25 × 12,647.93
  4. Step 4: Simplify right side
    52,090.88x = 988,261,366.54
  5. Step 5: Solve for x
    x = 988,261,366.54/52,090.88
  6. Step 6: Final answer
    x = 18,971.87

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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.