Home / 45,987.13-68,979.97-12,706.45

Finding the Fourth Proportional to 45,987.13, 68,979.97 and 12,706.45

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Solution

The fourth proportional to 45,987.13, 68,979.97 and 12,706.45 is: 19,059.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,987.13 : 68,979.97 = 12,706.45 : x
  2. Step 2: Convert to fraction form
    45,987.13/68,979.97 = 12,706.45/x
  3. Step 3: Cross multiply
    45,987.13x = 68,979.97 × 12,706.45
  4. Step 4: Simplify right side
    45,987.13x = 876,490,771.25
  5. Step 5: Solve for x
    x = 876,490,771.25/45,987.13
  6. Step 6: Final answer
    x = 19,059.48

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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.