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Finding the Fourth Proportional to 64,391,329.02, 96,589,984.05 and 20,673,871.50

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Solution

The fourth proportional to 64,391,329.02, 96,589,984.05 and 20,673,871.50 is: 31,011,767.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,391,329.02 : 96,589,984.05 = 20,673,871.50 : x
  2. Step 2: Convert to fraction form
    64,391,329.02/96,589,984.05 = 20,673,871.50/x
  3. Step 3: Cross multiply
    64,391,329.02x = 96,589,984.05 × 20,673,871.50
  4. Step 4: Simplify right side
    64,391,329.02x = 1,996,888,918,436,749.50
  5. Step 5: Solve for x
    x = 1,996,888,918,436,749.50/64,391,329.02
  6. Step 6: Final answer
    x = 31,011,767.40

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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.