Home / 68,987.10-103,480.65-51,272.40

Finding the Fourth Proportional to 68,987.10, 103,480.65 and 51,272.40

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Solution

The fourth proportional to 68,987.10, 103,480.65 and 51,272.40 is: 76,908.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,987.10 : 103,480.65 = 51,272.40 : x
  2. Step 2: Convert to fraction form
    68,987.10/103,480.65 = 51,272.40/x
  3. Step 3: Cross multiply
    68,987.10x = 103,480.65 × 51,272.40
  4. Step 4: Simplify right side
    68,987.10x = 5,305,701,279.06
  5. Step 5: Solve for x
    x = 5,305,701,279.06/68,987.10
  6. Step 6: Final answer
    x = 76,908.60

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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.