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Finding the Fourth Proportional to 89,345.80, 133,970.10 and 36,760.60

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Solution

The fourth proportional to 89,345.80, 133,970.10 and 36,760.60 is: 55,120.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,345.80 : 133,970.10 = 36,760.60 : x
  2. Step 2: Convert to fraction form
    89,345.80/133,970.10 = 36,760.60/x
  3. Step 3: Cross multiply
    89,345.80x = 133,970.10 × 36,760.60
  4. Step 4: Simplify right side
    89,345.80x = 4,924,821,258.06
  5. Step 5: Solve for x
    x = 4,924,821,258.06/89,345.80
  6. Step 6: Final answer
    x = 55,120.90

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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.