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Finding the Fourth Proportional to 93,201.62, 128,630.92 and 54,971.98

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Solution

The fourth proportional to 93,201.62, 128,630.92 and 54,971.98 is: 75,868.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,201.62 : 128,630.92 = 54,971.98 : x
  2. Step 2: Convert to fraction form
    93,201.62/128,630.92 = 54,971.98/x
  3. Step 3: Cross multiply
    93,201.62x = 128,630.92 × 54,971.98
  4. Step 4: Simplify right side
    93,201.62x = 7,071,096,361.62
  5. Step 5: Solve for x
    x = 7,071,096,361.62/93,201.62
  6. Step 6: Final answer
    x = 75,868.81

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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.