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Finding the Fourth Proportional to 86,124.36, 118,850.58 and 48,405

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Solution

The fourth proportional to 86,124.36, 118,850.58 and 48,405 is: 66,798.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,124.36 : 118,850.58 = 48,405 : x
  2. Step 2: Convert to fraction form
    86,124.36/118,850.58 = 48,405/x
  3. Step 3: Cross multiply
    86,124.36x = 118,850.58 × 48,405
  4. Step 4: Simplify right side
    86,124.36x = 5,752,962,324.90
  5. Step 5: Solve for x
    x = 5,752,962,324.90/86,124.36
  6. Step 6: Final answer
    x = 66,798.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.