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Finding the Fourth Proportional to 93,319.70, 139,986.40 and 39,959.64

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Solution

The fourth proportional to 93,319.70, 139,986.40 and 39,959.64 is: 59,942.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,319.70 : 139,986.40 = 39,959.64 : x
  2. Step 2: Convert to fraction form
    93,319.70/139,986.40 = 39,959.64/x
  3. Step 3: Cross multiply
    93,319.70x = 139,986.40 × 39,959.64
  4. Step 4: Simplify right side
    93,319.70x = 5,593,806,148.90
  5. Step 5: Solve for x
    x = 5,593,806,148.90/93,319.70
  6. Step 6: Final answer
    x = 59,942.39

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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.