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Finding the Fourth Proportional to 72,092.04, 99,489 and 40,263

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Solution

The fourth proportional to 72,092.04, 99,489 and 40,263 is: 55,564.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,092.04 : 99,489 = 40,263 : x
  2. Step 2: Convert to fraction form
    72,092.04/99,489 = 40,263/x
  3. Step 3: Cross multiply
    72,092.04x = 99,489 × 40,263
  4. Step 4: Simplify right side
    72,092.04x = 4,005,725,607
  5. Step 5: Solve for x
    x = 4,005,725,607/72,092.04
  6. Step 6: Final answer
    x = 55,564.05

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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.