Home / 89,528.85-123,543.78-51,288.57

Finding the Fourth Proportional to 89,528.85, 123,543.78 and 51,288.57

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Solution

The fourth proportional to 89,528.85, 123,543.78 and 51,288.57 is: 70,774.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,528.85 : 123,543.78 = 51,288.57 : x
  2. Step 2: Convert to fraction form
    89,528.85/123,543.78 = 51,288.57/x
  3. Step 3: Cross multiply
    89,528.85x = 123,543.78 × 51,288.57
  4. Step 4: Simplify right side
    89,528.85x = 6,336,383,808.59
  5. Step 5: Solve for x
    x = 6,336,383,808.59/89,528.85
  6. Step 6: Final answer
    x = 70,774.77

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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.