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Finding the Fourth Proportional to 93,960.81, 129,669.66 and 51,520.86

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Solution

The fourth proportional to 93,960.81, 129,669.66 and 51,520.86 is: 71,100.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,960.81 : 129,669.66 = 51,520.86 : x
  2. Step 2: Convert to fraction form
    93,960.81/129,669.66 = 51,520.86/x
  3. Step 3: Cross multiply
    93,960.81x = 129,669.66 × 51,520.86
  4. Step 4: Simplify right side
    93,960.81x = 6,680,692,399.11
  5. Step 5: Solve for x
    x = 6,680,692,399.11/93,960.81
  6. Step 6: Final answer
    x = 71,100.84

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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.