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Finding the Fourth Proportional to 72,976.95, 109,421.22 and 35,499.29

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Solution

The fourth proportional to 72,976.95, 109,421.22 and 35,499.29 is: 53,227.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,976.95 : 109,421.22 = 35,499.29 : x
  2. Step 2: Convert to fraction form
    72,976.95/109,421.22 = 35,499.29/x
  3. Step 3: Cross multiply
    72,976.95x = 109,421.22 × 35,499.29
  4. Step 4: Simplify right side
    72,976.95x = 3,884,375,073.83
  5. Step 5: Solve for x
    x = 3,884,375,073.83/72,976.95
  6. Step 6: Final answer
    x = 53,227.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.