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Finding the Fourth Proportional to 77,269.60, 115,921.20 and 44,005.60

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Solution

The fourth proportional to 77,269.60, 115,921.20 and 44,005.60 is: 66,017.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,269.60 : 115,921.20 = 44,005.60 : x
  2. Step 2: Convert to fraction form
    77,269.60/115,921.20 = 44,005.60/x
  3. Step 3: Cross multiply
    77,269.60x = 115,921.20 × 44,005.60
  4. Step 4: Simplify right side
    77,269.60x = 5,101,181,958.72
  5. Step 5: Solve for x
    x = 5,101,181,958.72/77,269.60
  6. Step 6: Final answer
    x = 66,017.97

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1.5x scale

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.