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Finding the Fourth Proportional to 63,409.68, 87,425.76 and 40,708.56

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Solution

The fourth proportional to 63,409.68, 87,425.76 and 40,708.56 is: 56,126.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,409.68 : 87,425.76 = 40,708.56 : x
  2. Step 2: Convert to fraction form
    63,409.68/87,425.76 = 40,708.56/x
  3. Step 3: Cross multiply
    63,409.68x = 87,425.76 × 40,708.56
  4. Step 4: Simplify right side
    63,409.68x = 3,558,976,796.51
  5. Step 5: Solve for x
    x = 3,558,976,796.51/63,409.68
  6. Step 6: Final answer
    x = 56,126.71

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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.