Home / 89,079.90-122,940.63-51,355.50

Finding the Fourth Proportional to 89,079.90, 122,940.63 and 51,355.50

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Solution

The fourth proportional to 89,079.90, 122,940.63 and 51,355.50 is: 70,876.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,079.90 : 122,940.63 = 51,355.50 : x
  2. Step 2: Convert to fraction form
    89,079.90/122,940.63 = 51,355.50/x
  3. Step 3: Cross multiply
    89,079.90x = 122,940.63 × 51,355.50
  4. Step 4: Simplify right side
    89,079.90x = 6,313,677,523.97
  5. Step 5: Solve for x
    x = 6,313,677,523.97/89,079.90
  6. Step 6: Final answer
    x = 70,876.57

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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.