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Finding the Fourth Proportional to 71,979.86, 99,327.93 and 41,762.84

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Solution

The fourth proportional to 71,979.86, 99,327.93 and 41,762.84 is: 57,630.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,979.86 : 99,327.93 = 41,762.84 : x
  2. Step 2: Convert to fraction form
    71,979.86/99,327.93 = 41,762.84/x
  3. Step 3: Cross multiply
    71,979.86x = 99,327.93 × 41,762.84
  4. Step 4: Simplify right side
    71,979.86x = 4,148,216,448.12
  5. Step 5: Solve for x
    x = 4,148,216,448.12/71,979.86
  6. Step 6: Final answer
    x = 57,630.24

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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.