Home / 71,508.89-98,682.64-39,677.78

Finding the Fourth Proportional to 71,508.89, 98,682.64 and 39,677.78

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Solution

The fourth proportional to 71,508.89, 98,682.64 and 39,677.78 is: 54,755.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,508.89 : 98,682.64 = 39,677.78 : x
  2. Step 2: Convert to fraction form
    71,508.89/98,682.64 = 39,677.78/x
  3. Step 3: Cross multiply
    71,508.89x = 98,682.64 × 39,677.78
  4. Step 4: Simplify right side
    71,508.89x = 3,915,508,227.25
  5. Step 5: Solve for x
    x = 3,915,508,227.25/71,508.89
  6. Step 6: Final answer
    x = 54,755.54

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1.5x scale

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.