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Finding the Fourth Proportional to 93,238.56, 139,732.64 and 45,781.20

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Solution

The fourth proportional to 93,238.56, 139,732.64 and 45,781.20 is: 68,610.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,238.56 : 139,732.64 = 45,781.20 : x
  2. Step 2: Convert to fraction form
    93,238.56/139,732.64 = 45,781.20/x
  3. Step 3: Cross multiply
    93,238.56x = 139,732.64 × 45,781.20
  4. Step 4: Simplify right side
    93,238.56x = 6,397,127,938.37
  5. Step 5: Solve for x
    x = 6,397,127,938.37/93,238.56
  6. Step 6: Final answer
    x = 68,610.33

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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.