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Finding the Fourth Proportional to 77,241.44, 115,666.08 and 64,728.56

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Solution

The fourth proportional to 77,241.44, 115,666.08 and 64,728.56 is: 96,928.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,241.44 : 115,666.08 = 64,728.56 : x
  2. Step 2: Convert to fraction form
    77,241.44/115,666.08 = 64,728.56/x
  3. Step 3: Cross multiply
    77,241.44x = 115,666.08 × 64,728.56
  4. Step 4: Simplify right side
    77,241.44x = 7,486,898,799.24
  5. Step 5: Solve for x
    x = 7,486,898,799.24/77,241.44
  6. Step 6: Final answer
    x = 96,928.52

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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.