Home / 52,092.18-78,137.70-12,649.33

Finding the Fourth Proportional to 52,092.18, 78,137.70 and 12,649.33

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Solution

The fourth proportional to 52,092.18, 78,137.70 and 12,649.33 is: 18,973.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,092.18 : 78,137.70 = 12,649.33 : x
  2. Step 2: Convert to fraction form
    52,092.18/78,137.70 = 12,649.33/x
  3. Step 3: Cross multiply
    52,092.18x = 78,137.70 × 12,649.33
  4. Step 4: Simplify right side
    52,092.18x = 988,389,602.98
  5. Step 5: Solve for x
    x = 988,389,602.98/52,092.18
  6. Step 6: Final answer
    x = 18,973.86

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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.