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Finding the Fourth Proportional to 74,966.58, 103,458.87 and 43,143.30

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Solution

The fourth proportional to 74,966.58, 103,458.87 and 43,143.30 is: 59,540.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,966.58 : 103,458.87 = 43,143.30 : x
  2. Step 2: Convert to fraction form
    74,966.58/103,458.87 = 43,143.30/x
  3. Step 3: Cross multiply
    74,966.58x = 103,458.87 × 43,143.30
  4. Step 4: Simplify right side
    74,966.58x = 4,463,557,066.07
  5. Step 5: Solve for x
    x = 4,463,557,066.07/74,966.58
  6. Step 6: Final answer
    x = 59,540.63

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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.