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Finding the Fourth Proportional to 108,039.60, 161,985.60 and 48,843

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Solution

The fourth proportional to 108,039.60, 161,985.60 and 48,843 is: 73,231.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,039.60 : 161,985.60 = 48,843 : x
  2. Step 2: Convert to fraction form
    108,039.60/161,985.60 = 48,843/x
  3. Step 3: Cross multiply
    108,039.60x = 161,985.60 × 48,843
  4. Step 4: Simplify right side
    108,039.60x = 7,911,862,660.80
  5. Step 5: Solve for x
    x = 7,911,862,660.80/108,039.60
  6. Step 6: Final answer
    x = 73,231.14

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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.