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Finding the Fourth Proportional to 77,372.64, 106,768.80 and 43,378.56

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Solution

The fourth proportional to 77,372.64, 106,768.80 and 43,378.56 is: 59,859.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,372.64 : 106,768.80 = 43,378.56 : x
  2. Step 2: Convert to fraction form
    77,372.64/106,768.80 = 43,378.56/x
  3. Step 3: Cross multiply
    77,372.64x = 106,768.80 × 43,378.56
  4. Step 4: Simplify right side
    77,372.64x = 4,631,476,796.93
  5. Step 5: Solve for x
    x = 4,631,476,796.93/77,372.64
  6. Step 6: Final answer
    x = 59,859.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.