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Finding the Fourth Proportional to 108,255.60, 162,484.65 and 54,985.68

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Solution

The fourth proportional to 108,255.60, 162,484.65 and 54,985.68 is: 82,529.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,255.60 : 162,484.65 = 54,985.68 : x
  2. Step 2: Convert to fraction form
    108,255.60/162,484.65 = 54,985.68/x
  3. Step 3: Cross multiply
    108,255.60x = 162,484.65 × 54,985.68
  4. Step 4: Simplify right side
    108,255.60x = 8,934,328,969.81
  5. Step 5: Solve for x
    x = 8,934,328,969.81/108,255.60
  6. Step 6: Final answer
    x = 82,529.95

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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.