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Finding the Fourth Proportional to 108,693.60, 163,040.40 and 38,563.80

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Solution

The fourth proportional to 108,693.60, 163,040.40 and 38,563.80 is: 57,845.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,693.60 : 163,040.40 = 38,563.80 : x
  2. Step 2: Convert to fraction form
    108,693.60/163,040.40 = 38,563.80/x
  3. Step 3: Cross multiply
    108,693.60x = 163,040.40 × 38,563.80
  4. Step 4: Simplify right side
    108,693.60x = 6,287,457,377.52
  5. Step 5: Solve for x
    x = 6,287,457,377.52/108,693.60
  6. Step 6: Final answer
    x = 57,845.70

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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.