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Finding the Fourth Proportional to 108,256.80, 162,409.80 and 49,109.40

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Solution

The fourth proportional to 108,256.80, 162,409.80 and 49,109.40 is: 73,675.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,256.80 : 162,409.80 = 49,109.40 : x
  2. Step 2: Convert to fraction form
    108,256.80/162,409.80 = 49,109.40/x
  3. Step 3: Cross multiply
    108,256.80x = 162,409.80 × 49,109.40
  4. Step 4: Simplify right side
    108,256.80x = 7,975,847,832.12
  5. Step 5: Solve for x
    x = 7,975,847,832.12/108,256.80
  6. Step 6: Final answer
    x = 73,675.26

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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.