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Finding the Fourth Proportional to 72,596.16, 100,139.25 and 45,691.96

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Solution

The fourth proportional to 72,596.16, 100,139.25 and 45,691.96 is: 63,027.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,596.16 : 100,139.25 = 45,691.96 : x
  2. Step 2: Convert to fraction form
    72,596.16/100,139.25 = 45,691.96/x
  3. Step 3: Cross multiply
    72,596.16x = 100,139.25 × 45,691.96
  4. Step 4: Simplify right side
    72,596.16x = 4,575,558,605.43
  5. Step 5: Solve for x
    x = 4,575,558,605.43/72,596.16
  6. Step 6: Final answer
    x = 63,027.56

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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.