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Finding the Fourth Proportional to 108,621.60, 162,813.60 and 38,464.80

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Solution

The fourth proportional to 108,621.60, 162,813.60 and 38,464.80 is: 57,655.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,621.60 : 162,813.60 = 38,464.80 : x
  2. Step 2: Convert to fraction form
    108,621.60/162,813.60 = 38,464.80/x
  3. Step 3: Cross multiply
    108,621.60x = 162,813.60 × 38,464.80
  4. Step 4: Simplify right side
    108,621.60x = 6,262,592,561.28
  5. Step 5: Solve for x
    x = 6,262,592,561.28/108,621.60
  6. Step 6: Final answer
    x = 57,655.13

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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.