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Finding the Fourth Proportional to 84,562.70, 116,430.96 and 71,789.42

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Solution

The fourth proportional to 84,562.70, 116,430.96 and 71,789.42 is: 98,843.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,562.70 : 116,430.96 = 71,789.42 : x
  2. Step 2: Convert to fraction form
    84,562.70/116,430.96 = 71,789.42/x
  3. Step 3: Cross multiply
    84,562.70x = 116,430.96 × 71,789.42
  4. Step 4: Simplify right side
    84,562.70x = 8,358,511,088.44
  5. Step 5: Solve for x
    x = 8,358,511,088.44/84,562.70
  6. Step 6: Final answer
    x = 98,843.95

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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.