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Finding the Fourth Proportional to 74,373.28, 102,633.96 and 40,839.28

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Solution

The fourth proportional to 74,373.28, 102,633.96 and 40,839.28 is: 56,357.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,373.28 : 102,633.96 = 40,839.28 : x
  2. Step 2: Convert to fraction form
    74,373.28/102,633.96 = 40,839.28/x
  3. Step 3: Cross multiply
    74,373.28x = 102,633.96 × 40,839.28
  4. Step 4: Simplify right side
    74,373.28x = 4,191,497,029.95
  5. Step 5: Solve for x
    x = 4,191,497,029.95/74,373.28
  6. Step 6: Final answer
    x = 56,357.57

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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.