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Finding the Fourth Proportional to 36,978,771.31, 55,360,226.08 and 21,578,869.87

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Solution

The fourth proportional to 36,978,771.31, 55,360,226.08 and 21,578,869.87 is: 32,305,322.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,978,771.31 : 55,360,226.08 = 21,578,869.87 : x
  2. Step 2: Convert to fraction form
    36,978,771.31/55,360,226.08 = 21,578,869.87/x
  3. Step 3: Cross multiply
    36,978,771.31x = 55,360,226.08 × 21,578,869.87
  4. Step 4: Simplify right side
    36,978,771.31x = 1,194,611,114,442,673.25
  5. Step 5: Solve for x
    x = 1,194,611,114,442,673.25/36,978,771.31
  6. Step 6: Final answer
    x = 32,305,322.01

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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.