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Finding the Fourth Proportional to 93,442.40, 140,163.60 and 77,039.90

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Solution

The fourth proportional to 93,442.40, 140,163.60 and 77,039.90 is: 115,559.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,442.40 : 140,163.60 = 77,039.90 : x
  2. Step 2: Convert to fraction form
    93,442.40/140,163.60 = 77,039.90/x
  3. Step 3: Cross multiply
    93,442.40x = 140,163.60 × 77,039.90
  4. Step 4: Simplify right side
    93,442.40x = 10,798,189,727.64
  5. Step 5: Solve for x
    x = 10,798,189,727.64/93,442.40
  6. Step 6: Final answer
    x = 115,559.85

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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.