Home / 52,107.80-78,161.74-12,664.66

Finding the Fourth Proportional to 52,107.80, 78,161.74 and 12,664.66

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Solution

The fourth proportional to 52,107.80, 78,161.74 and 12,664.66 is: 18,997.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,107.80 : 78,161.74 = 12,664.66 : x
  2. Step 2: Convert to fraction form
    52,107.80/78,161.74 = 12,664.66/x
  3. Step 3: Cross multiply
    52,107.80x = 78,161.74 × 12,664.66
  4. Step 4: Simplify right side
    52,107.80x = 989,891,862.11
  5. Step 5: Solve for x
    x = 989,891,862.11/52,107.80
  6. Step 6: Final answer
    x = 18,997.00

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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.