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Finding the Fourth Proportional to 108,954.80, 163,432.20 and 49,905.80

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Solution

The fourth proportional to 108,954.80, 163,432.20 and 49,905.80 is: 74,858.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,954.80 : 163,432.20 = 49,905.80 : x
  2. Step 2: Convert to fraction form
    108,954.80/163,432.20 = 49,905.80/x
  3. Step 3: Cross multiply
    108,954.80x = 163,432.20 × 49,905.80
  4. Step 4: Simplify right side
    108,954.80x = 8,156,214,686.76
  5. Step 5: Solve for x
    x = 8,156,214,686.76/108,954.80
  6. Step 6: Final answer
    x = 74,858.70

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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.