Home / 89,672.34-123,748.20-51,433.38

Finding the Fourth Proportional to 89,672.34, 123,748.20 and 51,433.38

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Solution

The fourth proportional to 89,672.34, 123,748.20 and 51,433.38 is: 70,978.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,672.34 : 123,748.20 = 51,433.38 : x
  2. Step 2: Convert to fraction form
    89,672.34/123,748.20 = 51,433.38/x
  3. Step 3: Cross multiply
    89,672.34x = 123,748.20 × 51,433.38
  4. Step 4: Simplify right side
    89,672.34x = 6,364,788,194.92
  5. Step 5: Solve for x
    x = 6,364,788,194.92/89,672.34
  6. Step 6: Final answer
    x = 70,978.28

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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.