Home / 89,372.88-123,337.16-51,138.64

Finding the Fourth Proportional to 89,372.88, 123,337.16 and 51,138.64

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Solution

The fourth proportional to 89,372.88, 123,337.16 and 51,138.64 is: 70,572.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,372.88 : 123,337.16 = 51,138.64 : x
  2. Step 2: Convert to fraction form
    89,372.88/123,337.16 = 51,138.64/x
  3. Step 3: Cross multiply
    89,372.88x = 123,337.16 × 51,138.64
  4. Step 4: Simplify right side
    89,372.88x = 6,307,294,623.86
  5. Step 5: Solve for x
    x = 6,307,294,623.86/89,372.88
  6. Step 6: Final answer
    x = 70,572.80

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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.