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Finding the Fourth Proportional to 64,379,991.80, 96,569,987.70 and 57,325,604.60

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Solution

The fourth proportional to 64,379,991.80, 96,569,987.70 and 57,325,604.60 is: 85,988,406.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,379,991.80 : 96,569,987.70 = 57,325,604.60 : x
  2. Step 2: Convert to fraction form
    64,379,991.80/96,569,987.70 = 57,325,604.60/x
  3. Step 3: Cross multiply
    64,379,991.80x = 96,569,987.70 × 57,325,604.60
  4. Step 4: Simplify right side
    64,379,991.80x = 5,535,932,931,117,064
  5. Step 5: Solve for x
    x = 5,535,932,931,117,064/64,379,991.80
  6. Step 6: Final answer
    x = 85,988,406.90

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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.