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Finding the Fourth Proportional to 74,556.66, 102,894.12 and 42,728.52

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Solution

The fourth proportional to 74,556.66, 102,894.12 and 42,728.52 is: 58,968.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,556.66 : 102,894.12 = 42,728.52 : x
  2. Step 2: Convert to fraction form
    74,556.66/102,894.12 = 42,728.52/x
  3. Step 3: Cross multiply
    74,556.66x = 102,894.12 × 42,728.52
  4. Step 4: Simplify right side
    74,556.66x = 4,396,513,464.30
  5. Step 5: Solve for x
    x = 4,396,513,464.30/74,556.66
  6. Step 6: Final answer
    x = 58,968.76

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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.