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Finding the Fourth Proportional to 81,566.76, 112,552.02 and 45,751.80

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Solution

The fourth proportional to 81,566.76, 112,552.02 and 45,751.80 is: 63,131.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,566.76 : 112,552.02 = 45,751.80 : x
  2. Step 2: Convert to fraction form
    81,566.76/112,552.02 = 45,751.80/x
  3. Step 3: Cross multiply
    81,566.76x = 112,552.02 × 45,751.80
  4. Step 4: Simplify right side
    81,566.76x = 5,149,457,508.64
  5. Step 5: Solve for x
    x = 5,149,457,508.64/81,566.76
  6. Step 6: Final answer
    x = 63,131.81

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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.