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Finding the Fourth Proportional to 115,318.50, 172,989.09 and 32,212.50

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Solution

The fourth proportional to 115,318.50, 172,989.09 and 32,212.50 is: 48,321.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,318.50 : 172,989.09 = 32,212.50 : x
  2. Step 2: Convert to fraction form
    115,318.50/172,989.09 = 32,212.50/x
  3. Step 3: Cross multiply
    115,318.50x = 172,989.09 × 32,212.50
  4. Step 4: Simplify right side
    115,318.50x = 5,572,411,061.63
  5. Step 5: Solve for x
    x = 5,572,411,061.63/115,318.50
  6. Step 6: Final answer
    x = 48,321.92

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