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Finding the Fourth Proportional to 64,673,314.80, 97,023,450.60 and 21,555,913.20

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Solution

The fourth proportional to 64,673,314.80, 97,023,450.60 and 21,555,913.20 is: 32,338,362.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,673,314.80 : 97,023,450.60 = 21,555,913.20 : x
  2. Step 2: Convert to fraction form
    64,673,314.80/97,023,450.60 = 21,555,913.20/x
  3. Step 3: Cross multiply
    64,673,314.80x = 97,023,450.60 × 21,555,913.20
  4. Step 4: Simplify right side
    64,673,314.80x = 2,091,429,079,498,087.75
  5. Step 5: Solve for x
    x = 2,091,429,079,498,087.75/64,673,314.80
  6. Step 6: Final answer
    x = 32,338,362.21

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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.