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Finding the Fourth Proportional to 81,663.97, 112,701.84 and 45,369.67

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Solution

The fourth proportional to 81,663.97, 112,701.84 and 45,369.67 is: 62,613.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,663.97 : 112,701.84 = 45,369.67 : x
  2. Step 2: Convert to fraction form
    81,663.97/112,701.84 = 45,369.67/x
  3. Step 3: Cross multiply
    81,663.97x = 112,701.84 × 45,369.67
  4. Step 4: Simplify right side
    81,663.97x = 5,113,245,289.19
  5. Step 5: Solve for x
    x = 5,113,245,289.19/81,663.97
  6. Step 6: Final answer
    x = 62,613.23

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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.