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Finding the Fourth Proportional to 93,771.50, 129,399.70 and 51,321.82

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Solution

The fourth proportional to 93,771.50, 129,399.70 and 51,321.82 is: 70,821.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,771.50 : 129,399.70 = 51,321.82 : x
  2. Step 2: Convert to fraction form
    93,771.50/129,399.70 = 51,321.82/x
  3. Step 3: Cross multiply
    93,771.50x = 129,399.70 × 51,321.82
  4. Step 4: Simplify right side
    93,771.50x = 6,641,028,111.45
  5. Step 5: Solve for x
    x = 6,641,028,111.45/93,771.50
  6. Step 6: Final answer
    x = 70,821.39

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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.