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Finding the Fourth Proportional to 95,109.52, 131,111.40 and 72,409

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Solution

The fourth proportional to 95,109.52, 131,111.40 and 72,409 is: 99,818.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,109.52 : 131,111.40 = 72,409 : x
  2. Step 2: Convert to fraction form
    95,109.52/131,111.40 = 72,409/x
  3. Step 3: Cross multiply
    95,109.52x = 131,111.40 × 72,409
  4. Step 4: Simplify right side
    95,109.52x = 9,493,645,362.60
  5. Step 5: Solve for x
    x = 9,493,645,362.60/95,109.52
  6. Step 6: Final answer
    x = 99,818.03

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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.