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Finding the Fourth Proportional to 74,825.88, 103,260.32 and 40,834.64

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Solution

The fourth proportional to 74,825.88, 103,260.32 and 40,834.64 is: 56,352.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,825.88 : 103,260.32 = 40,834.64 : x
  2. Step 2: Convert to fraction form
    74,825.88/103,260.32 = 40,834.64/x
  3. Step 3: Cross multiply
    74,825.88x = 103,260.32 × 40,834.64
  4. Step 4: Simplify right side
    74,825.88x = 4,216,597,273.01
  5. Step 5: Solve for x
    x = 4,216,597,273.01/74,825.88
  6. Step 6: Final answer
    x = 56,352.12

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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.