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Finding the Fourth Proportional to 72,437.63, 99,996.66 and 45,619.54

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Solution

The fourth proportional to 72,437.63, 99,996.66 and 45,619.54 is: 62,975.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,437.63 : 99,996.66 = 45,619.54 : x
  2. Step 2: Convert to fraction form
    72,437.63/99,996.66 = 45,619.54/x
  3. Step 3: Cross multiply
    72,437.63x = 99,996.66 × 45,619.54
  4. Step 4: Simplify right side
    72,437.63x = 4,561,801,380.74
  5. Step 5: Solve for x
    x = 4,561,801,380.74/72,437.63
  6. Step 6: Final answer
    x = 62,975.58

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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.