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Finding the Fourth Proportional to 32,940.86, 45,457.55 and 18,405.16

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Solution

The fourth proportional to 32,940.86, 45,457.55 and 18,405.16 is: 25,398.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,940.86 : 45,457.55 = 18,405.16 : x
  2. Step 2: Convert to fraction form
    32,940.86/45,457.55 = 18,405.16/x
  3. Step 3: Cross multiply
    32,940.86x = 45,457.55 × 18,405.16
  4. Step 4: Simplify right side
    32,940.86x = 836,653,292.54
  5. Step 5: Solve for x
    x = 836,653,292.54/32,940.86
  6. Step 6: Final answer
    x = 25,398.65

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.