Home / 93,439.20-140,115.60-40,821.60

Finding the Fourth Proportional to 93,439.20, 140,115.60 and 40,821.60

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Solution

The fourth proportional to 93,439.20, 140,115.60 and 40,821.60 is: 61,213.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,439.20 : 140,115.60 = 40,821.60 : x
  2. Step 2: Convert to fraction form
    93,439.20/140,115.60 = 40,821.60/x
  3. Step 3: Cross multiply
    93,439.20x = 140,115.60 × 40,821.60
  4. Step 4: Simplify right side
    93,439.20x = 5,719,742,976.96
  5. Step 5: Solve for x
    x = 5,719,742,976.96/93,439.20
  6. Step 6: Final answer
    x = 61,213.53

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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.