Home / 89,784.75-123,814.19-76,209.86

Finding the Fourth Proportional to 89,784.75, 123,814.19 and 76,209.86

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Solution

The fourth proportional to 89,784.75, 123,814.19 and 76,209.86 is: 105,094.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,784.75 : 123,814.19 = 76,209.86 : x
  2. Step 2: Convert to fraction form
    89,784.75/123,814.19 = 76,209.86/x
  3. Step 3: Cross multiply
    89,784.75x = 123,814.19 × 76,209.86
  4. Step 4: Simplify right side
    89,784.75x = 9,435,862,014.40
  5. Step 5: Solve for x
    x = 9,435,862,014.40/89,784.75
  6. Step 6: Final answer
    x = 105,094.26

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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.