Home / 61,111.26-91,640.16-36,158.40

Finding the Fourth Proportional to 61,111.26, 91,640.16 and 36,158.40

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Solution

The fourth proportional to 61,111.26, 91,640.16 and 36,158.40 is: 54,221.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,111.26 : 91,640.16 = 36,158.40 : x
  2. Step 2: Convert to fraction form
    61,111.26/91,640.16 = 36,158.40/x
  3. Step 3: Cross multiply
    61,111.26x = 91,640.16 × 36,158.40
  4. Step 4: Simplify right side
    61,111.26x = 3,313,561,561.34
  5. Step 5: Solve for x
    x = 3,313,561,561.34/61,111.26
  6. Step 6: Final answer
    x = 54,221.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.