Home / 39,782.19-59,680.49-12,079.47

Finding the Fourth Proportional to 39,782.19, 59,680.49 and 12,079.47

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Solution

The fourth proportional to 39,782.19, 59,680.49 and 12,079.47 is: 18,121.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,782.19 : 59,680.49 = 12,079.47 : x
  2. Step 2: Convert to fraction form
    39,782.19/59,680.49 = 12,079.47/x
  3. Step 3: Cross multiply
    39,782.19x = 59,680.49 × 12,079.47
  4. Step 4: Simplify right side
    39,782.19x = 720,908,628.14
  5. Step 5: Solve for x
    x = 720,908,628.14/39,782.19
  6. Step 6: Final answer
    x = 18,121.39

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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.