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Finding the Fourth Proportional to 93,467.42, 128,969.82 and 55,221.68

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Solution

The fourth proportional to 93,467.42, 128,969.82 and 55,221.68 is: 76,196.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,467.42 : 128,969.82 = 55,221.68 : x
  2. Step 2: Convert to fraction form
    93,467.42/128,969.82 = 55,221.68/x
  3. Step 3: Cross multiply
    93,467.42x = 128,969.82 × 55,221.68
  4. Step 4: Simplify right side
    93,467.42x = 7,121,930,129.70
  5. Step 5: Solve for x
    x = 7,121,930,129.70/93,467.42
  6. Step 6: Final answer
    x = 76,196.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.