Home / 81,351.10-112,261.24-47,360.56

Finding the Fourth Proportional to 81,351.10, 112,261.24 and 47,360.56

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Solution

The fourth proportional to 81,351.10, 112,261.24 and 47,360.56 is: 65,355.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,351.10 : 112,261.24 = 47,360.56 : x
  2. Step 2: Convert to fraction form
    81,351.10/112,261.24 = 47,360.56/x
  3. Step 3: Cross multiply
    81,351.10x = 112,261.24 × 47,360.56
  4. Step 4: Simplify right side
    81,351.10x = 5,316,755,192.69
  5. Step 5: Solve for x
    x = 5,316,755,192.69/81,351.10
  6. Step 6: Final answer
    x = 65,355.66

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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.