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Finding the Fourth Proportional to 72,025.64, 99,390.64 and 45,167

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Solution

The fourth proportional to 72,025.64, 99,390.64 and 45,167 is: 62,327.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,025.64 : 99,390.64 = 45,167 : x
  2. Step 2: Convert to fraction form
    72,025.64/99,390.64 = 45,167/x
  3. Step 3: Cross multiply
    72,025.64x = 99,390.64 × 45,167
  4. Step 4: Simplify right side
    72,025.64x = 4,489,177,036.88
  5. Step 5: Solve for x
    x = 4,489,177,036.88/72,025.64
  6. Step 6: Final answer
    x = 62,327.49

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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.