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Finding the Fourth Proportional to 64,164.62, 96,214.81 and 19,785.61

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Solution

The fourth proportional to 64,164.62, 96,214.81 and 19,785.61 is: 29,668.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,164.62 : 96,214.81 = 19,785.61 : x
  2. Step 2: Convert to fraction form
    64,164.62/96,214.81 = 19,785.61/x
  3. Step 3: Cross multiply
    64,164.62x = 96,214.81 × 19,785.61
  4. Step 4: Simplify right side
    64,164.62x = 1,903,668,416.88
  5. Step 5: Solve for x
    x = 1,903,668,416.88/64,164.62
  6. Step 6: Final answer
    x = 29,668.50

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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.