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Finding the Fourth Proportional to 50,796.70, 76,065.45 and 40,428.70

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Solution

The fourth proportional to 50,796.70, 76,065.45 and 40,428.70 is: 60,539.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,796.70 : 76,065.45 = 40,428.70 : x
  2. Step 2: Convert to fraction form
    50,796.70/76,065.45 = 40,428.70/x
  3. Step 3: Cross multiply
    50,796.70x = 76,065.45 × 40,428.70
  4. Step 4: Simplify right side
    50,796.70x = 3,075,227,258.42
  5. Step 5: Solve for x
    x = 3,075,227,258.42/50,796.70
  6. Step 6: Final answer
    x = 60,539.90

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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.