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Finding the Fourth Proportional to 108,765.69, 162,955.41 and 45,446.42

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Solution

The fourth proportional to 108,765.69, 162,955.41 and 45,446.42 is: 68,088.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,765.69 : 162,955.41 = 45,446.42 : x
  2. Step 2: Convert to fraction form
    108,765.69/162,955.41 = 45,446.42/x
  3. Step 3: Cross multiply
    108,765.69x = 162,955.41 × 45,446.42
  4. Step 4: Simplify right side
    108,765.69x = 7,405,739,580.11
  5. Step 5: Solve for x
    x = 7,405,739,580.11/108,765.69
  6. Step 6: Final answer
    x = 68,088.93

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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.