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Finding the Fourth Proportional to 84,509.77, 116,532.79 and 71,227.39

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Solution

The fourth proportional to 84,509.77, 116,532.79 and 71,227.39 is: 98,217.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,509.77 : 116,532.79 = 71,227.39 : x
  2. Step 2: Convert to fraction form
    84,509.77/116,532.79 = 71,227.39/x
  3. Step 3: Cross multiply
    84,509.77x = 116,532.79 × 71,227.39
  4. Step 4: Simplify right side
    84,509.77x = 8,300,326,481.12
  5. Step 5: Solve for x
    x = 8,300,326,481.12/84,509.77
  6. Step 6: Final answer
    x = 98,217.36

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1.5x scale

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.