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Finding the Fourth Proportional to 86,154.52, 118,893.09 and 47,913.03

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Solution

The fourth proportional to 86,154.52, 118,893.09 and 47,913.03 is: 66,119.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,154.52 : 118,893.09 = 47,913.03 : x
  2. Step 2: Convert to fraction form
    86,154.52/118,893.09 = 47,913.03/x
  3. Step 3: Cross multiply
    86,154.52x = 118,893.09 × 47,913.03
  4. Step 4: Simplify right side
    86,154.52x = 5,696,528,187.96
  5. Step 5: Solve for x
    x = 5,696,528,187.96/86,154.52
  6. Step 6: Final answer
    x = 66,119.90

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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.