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Finding the Fourth Proportional to 77,441.60, 115,989.60 and 63,617.60

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Solution

The fourth proportional to 77,441.60, 115,989.60 and 63,617.60 is: 95,284.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,441.60 : 115,989.60 = 63,617.60 : x
  2. Step 2: Convert to fraction form
    77,441.60/115,989.60 = 63,617.60/x
  3. Step 3: Cross multiply
    77,441.60x = 115,989.60 × 63,617.60
  4. Step 4: Simplify right side
    77,441.60x = 7,378,979,976.96
  5. Step 5: Solve for x
    x = 7,378,979,976.96/77,441.60
  6. Step 6: Final answer
    x = 95,284.45

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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.