Home / 89,121.25-122,987.33-51,395.50

Finding the Fourth Proportional to 89,121.25, 122,987.33 and 51,395.50

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Solution

The fourth proportional to 89,121.25, 122,987.33 and 51,395.50 is: 70,925.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,121.25 : 122,987.33 = 51,395.50 : x
  2. Step 2: Convert to fraction form
    89,121.25/122,987.33 = 51,395.50/x
  3. Step 3: Cross multiply
    89,121.25x = 122,987.33 × 51,395.50
  4. Step 4: Simplify right side
    89,121.25x = 6,320,995,319.02
  5. Step 5: Solve for x
    x = 6,320,995,319.02/89,121.25
  6. Step 6: Final answer
    x = 70,925.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.