Home / 89,216.64-123,120-51,503.04

Finding the Fourth Proportional to 89,216.64, 123,120 and 51,503.04

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Solution

The fourth proportional to 89,216.64, 123,120 and 51,503.04 is: 71,074.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,216.64 : 123,120 = 51,503.04 : x
  2. Step 2: Convert to fraction form
    89,216.64/123,120 = 51,503.04/x
  3. Step 3: Cross multiply
    89,216.64x = 123,120 × 51,503.04
  4. Step 4: Simplify right side
    89,216.64x = 6,341,054,284.80
  5. Step 5: Solve for x
    x = 6,341,054,284.80/89,216.64
  6. Step 6: Final answer
    x = 71,074.79

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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.