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Finding the Fourth Proportional to 77,263.44, 106,213.26 and 66,468.72

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Solution

The fourth proportional to 77,263.44, 106,213.26 and 66,468.72 is: 91,373.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,263.44 : 106,213.26 = 66,468.72 : x
  2. Step 2: Convert to fraction form
    77,263.44/106,213.26 = 66,468.72/x
  3. Step 3: Cross multiply
    77,263.44x = 106,213.26 × 66,468.72
  4. Step 4: Simplify right side
    77,263.44x = 7,059,859,439.23
  5. Step 5: Solve for x
    x = 7,059,859,439.23/77,263.44
  6. Step 6: Final answer
    x = 91,373.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.