Home / 52,108.36-78,161.44-12,665.68

Finding the Fourth Proportional to 52,108.36, 78,161.44 and 12,665.68

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Solution

The fourth proportional to 52,108.36, 78,161.44 and 12,665.68 is: 18,998.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,108.36 : 78,161.44 = 12,665.68 : x
  2. Step 2: Convert to fraction form
    52,108.36/78,161.44 = 12,665.68/x
  3. Step 3: Cross multiply
    52,108.36x = 78,161.44 × 12,665.68
  4. Step 4: Simplify right side
    52,108.36x = 989,967,787.38
  5. Step 5: Solve for x
    x = 989,967,787.38/52,108.36
  6. Step 6: Final answer
    x = 18,998.25

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1.5x scale

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.