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Finding the Fourth Proportional to 73,485.80, 110,228.70 and 38,436.20

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Solution

The fourth proportional to 73,485.80, 110,228.70 and 38,436.20 is: 57,654.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,485.80 : 110,228.70 = 38,436.20 : x
  2. Step 2: Convert to fraction form
    73,485.80/110,228.70 = 38,436.20/x
  3. Step 3: Cross multiply
    73,485.80x = 110,228.70 × 38,436.20
  4. Step 4: Simplify right side
    73,485.80x = 4,236,772,358.94
  5. Step 5: Solve for x
    x = 4,236,772,358.94/73,485.80
  6. Step 6: Final answer
    x = 57,654.30

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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.