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Finding the Fourth Proportional to 73,968.60, 110,734.20 and 69,643.20

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Solution

The fourth proportional to 73,968.60, 110,734.20 and 69,643.20 is: 104,258.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,968.60 : 110,734.20 = 69,643.20 : x
  2. Step 2: Convert to fraction form
    73,968.60/110,734.20 = 69,643.20/x
  3. Step 3: Cross multiply
    73,968.60x = 110,734.20 × 69,643.20
  4. Step 4: Simplify right side
    73,968.60x = 7,711,884,037.44
  5. Step 5: Solve for x
    x = 7,711,884,037.44/73,968.60
  6. Step 6: Final answer
    x = 104,258.89

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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.