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Finding the Fourth Proportional to 93,419.80, 140,178.30 and 40,834.60

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Solution

The fourth proportional to 93,419.80, 140,178.30 and 40,834.60 is: 61,273.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,419.80 : 140,178.30 = 40,834.60 : x
  2. Step 2: Convert to fraction form
    93,419.80/140,178.30 = 40,834.60/x
  3. Step 3: Cross multiply
    93,419.80x = 140,178.30 × 40,834.60
  4. Step 4: Simplify right side
    93,419.80x = 5,724,124,809.18
  5. Step 5: Solve for x
    x = 5,724,124,809.18/93,419.80
  6. Step 6: Final answer
    x = 61,273.14

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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.