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Finding the Fourth Proportional to 145,481.15, 218,221.99 and 45,649.01

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Solution

The fourth proportional to 145,481.15, 218,221.99 and 45,649.01 is: 68,473.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,481.15 : 218,221.99 = 45,649.01 : x
  2. Step 2: Convert to fraction form
    145,481.15/218,221.99 = 45,649.01/x
  3. Step 3: Cross multiply
    145,481.15x = 218,221.99 × 45,649.01
  4. Step 4: Simplify right side
    145,481.15x = 9,961,617,803.73
  5. Step 5: Solve for x
    x = 9,961,617,803.73/145,481.15
  6. Step 6: Final answer
    x = 68,473.60

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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.