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Finding the Fourth Proportional to 65,776,662.84, 90,769,479.62 and 36,408,052.20

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Solution

The fourth proportional to 65,776,662.84, 90,769,479.62 and 36,408,052.20 is: 50,241,830.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,776,662.84 : 90,769,479.62 = 36,408,052.20 : x
  2. Step 2: Convert to fraction form
    65,776,662.84/90,769,479.62 = 36,408,052.20/x
  3. Step 3: Cross multiply
    65,776,662.84x = 90,769,479.62 × 36,408,052.20
  4. Step 4: Simplify right side
    65,776,662.84x = 3,304,739,952,171,796.50
  5. Step 5: Solve for x
    x = 3,304,739,952,171,796.50/65,776,662.84
  6. Step 6: Final answer
    x = 50,241,830.61

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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.