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Finding the Fourth Proportional to 64,399.80, 96,599.70 and 43,404.60

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Solution

The fourth proportional to 64,399.80, 96,599.70 and 43,404.60 is: 65,106.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,399.80 : 96,599.70 = 43,404.60 : x
  2. Step 2: Convert to fraction form
    64,399.80/96,599.70 = 43,404.60/x
  3. Step 3: Cross multiply
    64,399.80x = 96,599.70 × 43,404.60
  4. Step 4: Simplify right side
    64,399.80x = 4,192,871,338.62
  5. Step 5: Solve for x
    x = 4,192,871,338.62/64,399.80
  6. Step 6: Final answer
    x = 65,106.90

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1.5x scale

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.