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Finding the Fourth Proportional to 112,470.67, 168,642.21 and 45,832.78

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Solution

The fourth proportional to 112,470.67, 168,642.21 and 45,832.78 is: 68,723.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,470.67 : 168,642.21 = 45,832.78 : x
  2. Step 2: Convert to fraction form
    112,470.67/168,642.21 = 45,832.78/x
  3. Step 3: Cross multiply
    112,470.67x = 168,642.21 × 45,832.78
  4. Step 4: Simplify right side
    112,470.67x = 7,729,341,309.64
  5. Step 5: Solve for x
    x = 7,729,341,309.64/112,470.67
  6. Step 6: Final answer
    x = 68,723.17

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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.