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Finding the Fourth Proportional to 64,189.62, 96,331.74 and 30,455.77

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Solution

The fourth proportional to 64,189.62, 96,331.74 and 30,455.77 is: 45,706.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,189.62 : 96,331.74 = 30,455.77 : x
  2. Step 2: Convert to fraction form
    64,189.62/96,331.74 = 30,455.77/x
  3. Step 3: Cross multiply
    64,189.62x = 96,331.74 × 30,455.77
  4. Step 4: Simplify right side
    64,189.62x = 2,933,857,317.14
  5. Step 5: Solve for x
    x = 2,933,857,317.14/64,189.62
  6. Step 6: Final answer
    x = 45,706.10

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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.