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Finding the Fourth Proportional to 50,817.70, 76,117.20 and 42,069.70

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Solution

The fourth proportional to 50,817.70, 76,117.20 and 42,069.70 is: 63,014.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,817.70 : 76,117.20 = 42,069.70 : x
  2. Step 2: Convert to fraction form
    50,817.70/76,117.20 = 42,069.70/x
  3. Step 3: Cross multiply
    50,817.70x = 76,117.20 × 42,069.70
  4. Step 4: Simplify right side
    50,817.70x = 3,202,227,768.84
  5. Step 5: Solve for x
    x = 3,202,227,768.84/50,817.70
  6. Step 6: Final answer
    x = 63,014.02

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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.