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Finding the Fourth Proportional to 76,259.52, 105,181.92 and 52,390.08

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Solution

The fourth proportional to 76,259.52, 105,181.92 and 52,390.08 is: 72,259.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,259.52 : 105,181.92 = 52,390.08 : x
  2. Step 2: Convert to fraction form
    76,259.52/105,181.92 = 52,390.08/x
  3. Step 3: Cross multiply
    76,259.52x = 105,181.92 × 52,390.08
  4. Step 4: Simplify right side
    76,259.52x = 5,510,489,203.35
  5. Step 5: Solve for x
    x = 5,510,489,203.35/76,259.52
  6. Step 6: Final answer
    x = 72,259.69

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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.