Home / 52,138.43-78,206.83-12,695.21

Finding the Fourth Proportional to 52,138.43, 78,206.83 and 12,695.21

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Solution

The fourth proportional to 52,138.43, 78,206.83 and 12,695.21 is: 19,042.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,138.43 : 78,206.83 = 12,695.21 : x
  2. Step 2: Convert to fraction form
    52,138.43/78,206.83 = 12,695.21/x
  3. Step 3: Cross multiply
    52,138.43x = 78,206.83 × 12,695.21
  4. Step 4: Simplify right side
    52,138.43x = 992,851,707.51
  5. Step 5: Solve for x
    x = 992,851,707.51/52,138.43
  6. Step 6: Final answer
    x = 19,042.61

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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.